Δ V = 0
Question 84. (a) Explain why on addition of 1 mol glucose to 1 litre water the boiling point of water increases. (b) Henry’s law constant for CO 2 in water is 1.67 × 10 8 Pa at 298 K. Calculate the number of moles of CO 2 in 500 ml of soda water when packed under 2.53 × 10 5 Pa at the same temperature. (Comptt. All India 2017) Answer: (a) Glucose is a non-volatile solute, therefore, addition of glucose to water lowers the vapour pressure of water as a result of which boiling point of water increases.
Question 85. (a) Define the following terms : (i) Ideal solution (ii) Osmotic pressure (b) Calculate the boiling point elevation for a solution prepared by adding 10 g CaCl 2 to 200 g of water, assuming that CaCl 2 is completely dissociated. (K b ) for water = 0.512 K kg mol -1 ; Molar mass of CaCl 2 = 111 g mol -1 ) (Comptt. All India 2017) Answer: (a) (i) Ideal solution : The solutions which obey Raoult’s law over the entire range of concentration are known as ideal solutions. (ii) The minimum excess pressure that has to be applied on the solution to prevent the entry of the solvent into the solution through the semipermeable membrane is called the osmotic pressure.
Free resources.
In Class 12 Boards there will be Case studies and Passage Based Questions will be asked, So practice these types of questions. Study Rate is always there to help you. Free PDF Downloads of CBSE Class 12 Chemistry Chapter 1 The Solid State Case Study and Passage-Based Questions with Answers were Prepared Based on the Latest Exam Pattern. Students can solve NCERT Class 12 Chemistry Case Study Questions The Solid State to know their preparation level.
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In CBSE Class 12 Chemistry Paper, There will be a few questions based on case studies and passage-based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked.
Here, we have provided case-based/passage-based questions for Class 12 Chemistry Chapter 1 The Solid State
Case Study/Passage-Based Questions
Case Study 1: In a hexagonal system of crystals, a frequently encountered arrangement of atoms is described as a hexagonal prism. Here, the top and bottom of the cell are regular hexagons and three atoms are sandwiched in between them. A space-filling model of this structure, called hexagonal close-packed (hep), is constituted of a sphere on a flat surface surrounded in the same plane by six identical spheres as closely as possible. Three spheres are then placed over the first layer so that they touch each other and represent the second layer. Each one of these three spheres touches three spheres of the bottom layer. Finally, the second layer is covered with a third layer that is identical to the bottom layer in a relative position.
(I) The number of atoms in this hep unit cell is
(a) 4 | (b) 6 | (c) 12 | (d) 17 |
Answer: (b) 6
(ii) The empty space in this hep unit cell is
(a) 74% | (b) 47.6% | (c) 32% | (d) 26% |
Answer:(d) 26%
(iii) In hexagonal close packing of spheres in three-dimensions
(a) in one unit cell, there are six octahedral voids and all are completely inside the unit cell |
(b) in one unit cell, there are six octahedral voids out of which three are completely inside the unit cell and the other three are from contributions of octahedral voids which are partially inside the unit cell |
(c) in one unit cell, there are 12 tetrahedral voids, all are completely inside the unit cell. |
in one unit cell there are 12 octahedral voids and all are completely inside the unit cell |
Answer:(a) in one unit cell, there are six octahedral voids and all are completely inside the unit cell
Case Study 2: In an assembly of atoms or molecules, a solid phase is formed whenever the interatomic attractive forces significantly exceed the disruptive thermal forces and thus restrict the mobility of atoms, forcing them into more or less fixed positions. From energy considerations, it is evident that in such solids the atoms or molecules will always attempt to assume highly ordered structures which are characterised by symmetry. Depending on the nature of the active interatomic forces, all solids may be subdivided into the following categories: Ionic solids: These solids consist of positively and negatively charged ions arranged in a regular fashion throughout the solid. These solids are veryhard and brittle, have very high melting points and have high enthalpies of vaporisation, e.g., NaCl, MgO, KCl, LiCl etc. Covalent solids: In these solids, the constituent particles are atoms which are linked together by a continuous system of covalent bonds. These bonds are strong and directional in nature. The covalent crystals are hard, have high melting points, are poor conductors of electricity. Diamond is a typical example of covalent solids. Metallic solids : In these solids, the constituent particles are positive ions immersed in a sea of mobile electrons. Metallic solids may be hard as well as soft. They are good conductors of heat and electricity e.g., common metals such as nickel, copper and alloys. Molecular solids : In these the constituent particles are molecules. The molecules are held together by dispersion forces or London forces, dipole-dipole forces or hydrogen bonds. In these questions (Q. No. i-iv), a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices. (a) Assertion and reason both are correct statements and reason is correct explanation for assertion. (b) Assertion and reason both are correct statements but reason is not correct explanation for assertion. (c) Assertion is correct statement but reason is wrong statement. (d) Assertion is wrong statement but reason is correct statement.
(i) Assertion: Molecular solids are characterized by low melting point. Reason: Molecular solids are made up of covalent molecules.
Answer:(b) Assertion and reason both are correct statements but reason is not correct explanation for assertion.
(ii) Assertion: Ionic solids are characterized by high melting and boiling point. Reason: Ionic solids have coulombic forces of attraction between their ions.
Answer:(a) Assertion and reason both are correct statements and reason is correct explanation for assertion.
(iii) Assertion: Covalent solids are insulators of electricity. Reason: Covalent solids are constituted by ions.
Answer:(c) Assertion is correct statement but reason is wrong statement.
(iv) Assertion: Diamond and graphite do not have the same covalent structure. Reason: Silicon carbide is typical example of network solid.
Hope the information shed above regarding Case Study and Passage Based Questions for Class 12 Chemistry Chapter 1 The Solid State with Answers Pdf free download has been useful to an extent. If you have any other queries about the CBSE Class 12 Chemistry The Solid State Case Study and Passage-Based Questions with Answers, feel free to comment below so that we can revert back to us at the earliest possible.
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ScoreMore Case Study Chapter-wise Practice Questions Chemistry Class-12 is curated with 800+ Chapter-wise MCQs related to Case study/ Passage based and Assertion & Reason with hints and explanations based on latest pattern of CBSE (2020-2021).
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MTG ScoreMore Case Study Based Sample Questions Chemistry Class 12 is specially designed to help students get familiar with solving these new patterns of questions. The book covers 800 + sample questions for practice with detailed explanations to each question. Practising these questions will definitely help students to get an edge in their CBSE preparations.
For the academic year 2020-21 CBSE has incorporated more Objective type/MCQ based questions which will focus on measuring critical thinking ability of students.
The new pattern of questions includes Case study based questions, Passage based questions, Assertion and Reason type questions. In Case study based/ Passage based questions, students will be expected to answer questions after reading a given paragraph or a passage. Assertion and Reason type question is just another way of checking the clarity of one’s concept.
ISBN13 | 9789390801381 |
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Author | MTG Editorial Board |
Edition | 2020-21 |
Pages | 152 |
Classes | Class 12 |
Exams | CBSE Boards, CUET |
Subjects | Chemistry |
Weight | 250gm |
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Table of Contents
Download the app to get CBSE Sample Papers 2023-24, NCERT Solutions (Revised), Most Important Questions, Previous Year Question Bank, Mock Tests, and Detailed Notes.
Class 12 Maths question paper will have 1-2 Case Study Questions. These questions will carry 5 MCQs and students will attempt any four of them. As all of these are only MCQs, it is easy to score good marks with a little practice. Class 12 Maths Case Study Questions are available on the myCBSEguide App and Student Dashboard .
CBSE has introduced case study questions in the CBSE curriculum recently. The purpose was to make students ready to face real-life challenges with the knowledge acquired in their classrooms. It means, there was a need to connect theories with practicals. Whatsoever the students are learning, they must know how to apply it in their day-to-day life. That’s why CBSE is emphasizing case studies and competency-based education .
Let’s have a look over the class 12 Mathematics sample question paper issued by CBSE, New Delhi. Question numbers 17 and 18 are case study questions.
If you go through each MCQ there, you will find that the theme/case study is common but the questions are based on different concepts related to the theme. It means, that if you have done ample practice on the various concepts, you can solve all these MCQs in minutes.
The difficulty level of the questions is average or say easy in some cases. On the other hand, you get four options to choose from. So, you get two levels of support to get full marks with very little effort.
Most of the time we feel that it’s easy and neglect it. But in the end, we have to pay for this negligence. This may happen here too. Although it’s easy to score good marks on the case study questions if you don’t practice such questions, you may lose your marks. So, we suggest students should practice at least 30-40 such questions before writing the board exam.
We are giving you some examples of case study questions here. We have arranged hundreds of such questions chapter-wise on the myCBSEguide App. It is the complete guide for CBSE students. You can download the myCBSEguide App and get more case study questions there.
Answer Key:
Read the case study carefully and answer any four out of the following questions: Once a mathematics teacher drew a triangle ABC on the blackboard. Now he asked Jose,” If I increase AB by 11 cm and decrease the side BC by 11 cm, then what type of triangle it would be?” Jose said, “It will become an equilateral triangle.”
Again teacher asked Suraj,” If I multiply the side AB by 4 then what will be the relation of this with side AC?” Suraj said it will be 10 cm more than the three times AC.
Find the sides of the triangle using the matrix method and answer the following questions:
DETERMINANTS: A determinant is a square array of numbers (written within a pair of vertical lines) that represents a certain sum of products. We can solve a system of equations using determinants, but it becomes very tedious for large systems. We will only do 2 × 2 and 3 × 3 systems using determinants. Using the properties of determinants solve the problem given below and answer the questions that follow:
Three shopkeepers Ram Lal, Shyam Lal, and Ghansham are using polythene bags, handmade bags (prepared by prisoners), and newspaper envelopes as carrying bags. It is found that the shopkeepers Ram Lal, Shyam Lal, and Ghansham are using (20,30,40), (30,40,20), and (40,20,30) polythene bags, handmade bags, and newspapers envelopes respectively. The shopkeeper’s Ram Lal, Shyam Lal, and Ghansham spent ₹250, ₹270, and ₹200 on these carry bags respectively.
Case study questions application of derivatives.
These are only some samples. If you wish to get more case study questions for CBSE class 12 maths, install the myCBSEguide App. It has class 12 Maths chapter-wise case studies with solutions.
Question Paper Design of CBSE class 12 maths is as below. It clearly shows that 20% weightage will be given to HOTS questions. Whereas 55% of questions will be easy to solve.
1. | Exhibit memory of previously learned material by recalling facts, terms, basic concepts, and answers. Demonstrate understanding of facts and ideas by organizing, comparing, translating, interpreting, giving descriptions, and stating main ideas | 44 | 55 |
2. | Solve problems to new situations by applying acquired knowledge, facts, techniques and rules in a different way. | 20 | 25 |
3. | Examine and break information into parts by identifying motives or causes. Make inferences and find evidence to support generalizations | 16 | 20 |
Present and defend opinions by making judgments about information, the validity of ideas, or quality of work based on a set of criteria. | |||
Compile information together in a different way by combining elements in a new pattern or proposing alternative solutions | |||
80 | 100 |
Choice(s): There will be no overall choice in the question paper. However, 33% of internal choices will be given in all the sections
Periodic Tests ( Best 2 out of 3 tests conducted) | 10 Marks |
Mathematics Activities | 10 Marks |
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CBSE Class 12 Mathematics Case Study Questions are introduced this year in the updated CBSE Board Exam Pattern. According to that this year the candidates need to prepare for the case study problems along with the questions that are legacy of CBSE Board.
In Class XIIth Mathematics Case Study Questions there are problems based on Objective types of questions, Assertions and Reason, and cae based problems. These problems have the intention to examine the students' overall understanding of the subject. If you are preparing for the Maths board exam then this is the right place for you.
Here, we have provided the complete set of CBSE class 12 maths case study questions With Solutions. These are developed by the subject matter expert. If you want to score good marks in the board papers then you should practice these Case based problems. It is absolutely free of cost.
Download PDF CBSE Class 12 Maths Case Study From the Given links. It is in chapter wise format.
Class 12 Maths Chapter 2 – Inverse Trigonometric Functions Case Study | |
Class 12 Maths Chapter 7 – Integrals Case Study | |
Chapter 1 – Relations and Functions (MCQ, Case-Based, Assertion & Reasoning) | |
Chapter 2 – Inverse Trigonometric Functions (MCQ, Case-Based, Assertion & Reasoning) | |
Chapter 3 – Matrices (MCQ, Case-Based, Assertion & Reasoning) | |
Chapter 4 – Determinants (MCQ, Case-Based, Assertion & Reasoning) | |
Chapter 5 – Continuity and Differentiability (MCQ, Case-Based, Assertion & Reasoning) | |
Chapter 6 – Application of Derivatives (MCQ, Case-Based, Assertion & Reasoning) | |
Chapter 7 – Integrals (MCQ) | |
Chapter 8 – Application of Integrals (MCQ) | |
Chapter 9 – Differential Equations (MCQ) | |
Chapter 10 – Vector Algebra (MCQ) | |
Chapter 11 – Three Dimensional Geometry (MCQ) | |
Chapter 12 – Linear Programming (MCQ, Case-Based, Assertion & Reasoning) | |
Chapter 13 – Probability (MCQ) |
In class 12th Maths Case Study the questions are based on the real world scenarios. A passage filled with information or data is provided to the students. On the basis of that paragraph upto 5 questions are developed which should be answered by the students. To answer them they need to read the passage carefully and then pay attention to the given data to solve such questions.
These types of problems are generally known as case based questions which can be only solved by referring to the given paragraph.
Knowing about the Maths Important Formulas is a crucial part of solving the Maths questions. Formulas help in solving the problems more efficiently and faster. Therefore the PDF file that we have provided here consists of all the basics and Important formulas of maths. It will help in revisions and solving the questions more accurately and easily.
Every chapter has its own topics and formulas so the PDF has been divided into chapter wise format. And if you access them from this place then you will be able to get all the formulas and other questions separately.
Class 12th Maths Assertion and Reason MCQs PDF with Solutions are also given here. It is the most important part of Case Study Questions because scoring good marks in this section is not that much hard. If your basic concepts are clear. Because most of the time such types of questions are directly prepared by referring to the concepts.
Furthermore, the assertion and reason MCQs are solved by applying the distinct approaches. For instance, to answer these questions first candidates need to verify the Assertion (Statement) and then the reason if both are correct, then learners need to verify whether both statement and reason support each other or not.
There are a total of 5 sections in CBSE Class 12 Maths Questions Term 1. Section A contains 1 mark, Section B contains 2 marks, Section C contains 3 marks, Section D contains 4 marks and the last Section E contains 5 marks. A total of 5 questions are given in these sections.
No, In Term 1 exam there will be a total of 5 questions in each case study of class 12 maths, out of which 4 are compulsory to solve.
Provide prime members with unlimited access to all study materials in PDF format.
Allow prime members to attempt MCQ tests multiple times to enhance their learning and understanding.
Provide prime users with access to exclusive PDF study materials that are not available to regular users.
Download chapter-wise ncert solutions for class 12 chemistry.
NCERT Solutions for Class 12 Chemistry are drafted by the faculty at BYJU’S to help students learn all the complex concepts efficiently. Each and every question from the NCERT Textbook is answered in a systematic format to help students learn in a shorter duration. NCERT Solutions are prepared following vast research to make it easier for the students to complete the entire syllabus before the exams. Though various study materials are available online, it is very important for the students to identify their individual needs, and find the appropriate material accordingly. For this purpose, we at BYJU’S have provided both online and offline formats of the solutions, completely based on the latest syllabus of the CBSE board.
Students can access the chapter-wise solutions on this page from the links provided below. NCERT Solutions for Class 12 Chemistry Chapter 2 PDF Download option can be used by the students while learning the chapters from the textbook. NCERT Solutions Class 12 Chemistry (specific chapter) can be downloaded by clicking the links which are provided below.
The following chapters have been removed from the NCERT Class 12 Chemistry textbook 2023-24.
Understanding the concepts during class hours might be difficult for the students. To overcome this issue, students must make use of the reference materials which are available online to get their doubts cleared. Regular practice of concepts in which they are weak will make them more confident from the exam point of view. Students are advised to read the chapter from the NCERT textbook and answer the exercise questions present in them for strong conceptual knowledge. The problem-solving and analytical thinking skills among students will be developed if the students answer the questions by referring to the NCERT Solutions available at BYJU’S.
Download NCERT Chemistry Class 12 Solutions PDF to boost your final exam preparation.
NCERT Solutions Class 12 Chemistry is an important subject as it contains many chemical reactions and problems which are of more marks when it comes to exams. Scoring good marks in this subject is possible only if students learn the chapters on a regular basis. Even numericals are present in the chapters, so noting down the important formulas and understanding the method of solving them is an important step here. The NCERT Solutions contain an explanation for each reaction so that it will be easier for the students while preparing for the exams. Students will also be able to revise the chapters and recall them easily while answering the complex questions in the exam.
Chapter 1: the solid state.
This chapter explains the general characteristics of solid state, crystal lattice, classification of solids , imperfections in solids and unit cell. Matter is of three states – solid, liquid and gas. Solids are again divided into – Crystalline and Amorphous. Crystalline has a definite shape, whereas amorphous has no form. NCERT Solutions is a perfect guide to acquire a firm grip over these concepts. To strengthen the concepts further, students can also access the NCERT Exemplar Solutions which are available at BYJU’S.
Also access the following resources for Class 12 Chapter 1 The Solid State at BYJU’S:
A solution is a mixture of two or more components. This chapter helps students to understand the concentration of solutions, types of solutions, the vapour pressure of liquid solutions, solubility of gases and solids in a liquid, ideal and non ideal solutions and Raoult’s Law. Various problems based on finding the molarity, mole fraction, mass percentage and Henry’s Law constant are also present here. These problems are not only important for the Class 12 exams but also are of higher importance in competitive exams like JEE Mains, JEE Advanced etc.
Topics Covered in Class 12 CBSE Chemistry Chapter 2 Solutions :
Types of solutions, expression of concentration of solutions of solids in liquids, solubility of gases in liquids, solid solutions, colligative properties – relative lowering of vapour pressure, elevation of B.P., depression of freezing point, osmotic pressure, determination of molecular masses using colligative properties, and abnormal molecular mass.
Also access the following resources for Class 12 Chapter 2 Solutions at BYJU’S:
Electrochemistry is defined as the branch of Chemistry which deals with the relationship between electrical and chemical energy produced in a redox reaction and their conversion. The concepts which are covered in this chapter are – electrochemical cells, Galvanic cells , Nernst equation, conductance of electrolytic solutions, electrolytic cells and electrolysis, batteries, fuel cells and corrosion. Students who are not able to solve the numerical problems can also refer to the NCERT Solutions and answer them effortlessly.
Topics Covered in Class 12 CBSE Chemistry Chapter 3 Electrochemistry :
Redox reactions; conductance in electrolytic solutions, specific and molar conductivity variations of conductivity with concentration, Kohlrausch’s Law, electrolysis and laws of electrolysis (elementary idea), dry cell – electrolytic cells and Galvanic cells; lead accumulator, EMF of a cell, standard electrode potential, Nernst equation and its application to chemical cells, fuel cells; corrosion.
Also access the following resources for Class 12 Chapter 3 Electrochemistry at BYJU’S:
This chapter will provide you with a good understanding of the rate of chemical reaction, Arrhenius equation , dependence on the rate of reaction and collision theory of chemical reaction. Chemical Kinetics is a branch of Chemistry which deals with the rate of chemical reaction, the factors affecting it and the mechanism of the reaction. We have 3 types in accordance to the rate of reaction – Instantaneous reactions, Slow reactions and Moderately Slow reactions.
Topics Covered in Class 12 CBSE Chemistry Chapter 4 Chemical Kinetics :
Rate of a reaction (average and instantaneous), factors affecting rates of reaction: concentration, temperature, catalyst; order and molecularity of a reaction; rate law and specific rate constant, integrated rate equations and half life (only for zero and first order reactions); concept of collision theory (elementary idea, no mathematical treatment).
Also access the following resources for Class 12 Chapter 4 Chemical Kinetics at BYJU’S:
Surface chemistry deals with important features like catalysis, adsorption and colloids which comprises gel and emulsion. After going through this chapter, students will understand the interfacial phenomenon and its significance, adsorption and its classification, mechanism of adsorption and the factors controlling adsorption. Further solving the textbook questions along with previous year question papers will boost the exam preparation of CBSE students.
Also access the following resources for Class 12 Chapter 5 Surface Chemistry at BYJU’S:
Metallurgy is a scientific and technological process which is followed to isolate the metal from its ores. Apart from explaining the processes and reactions of metal extraction, students will also learn about the fundamental principles and developments which would occur in this field. Aluminium is the most abundant metal which is found on the earth’s crust which is 8.3% by weight. So cleaning the ore, i.e., removal of particles like clay, sand etc., is known as concentration or dressing of the ore.
Also access the following resources for Class 12 Chapter 6 General Principles and Processes of Isolation of Elements at BYJU’S:
The history of the p-block elements has a history which takes us back to the 19th century. Group 13, 14, 15, 16, 17 and 18 elements are known as p-block elements. They exist in three physical states – metal, non metal and metalloids. For a better clarification of these concepts, students can refer to the NCERT Solutions available at BYJU’S. The clear explanation of each and every concept will help students attain good marks in the final exam.
Also access the following resources for Class 12 Chapter 7 The p-Block Elements at BYJU’S:
The elements which are lying between the s and p-block elements are called as d-block or transition elements . The inner transition series are called as f-block elements. This chapter introduces concepts such as the general properties of transition elements, variation in ionic and atomic size of transition metals, physical properties, ionization enthalpies, magnetic properties and oxidation states. Students will get a clear idea about the electronic configuration, general characteristics and properties of important compounds in this chapter.
Topics Covered in Class 12 CBSE Chemistry Chapter 8 The d- and f-Block Elements :
General introduction, electronic configuration, occurrence and characteristics of transition metals, general trends in properties of the first row transition metals – metallic character, ionization enthalpy, oxidation states, ionic radii, colour, catalytic property, magnetic properties, interstitial compounds, alloy formation. Preparation and properties of K 2 Cr 2 O 7 and KMnO 4 . Lanthanoids: electronic configuration, oxidation states, chemical reactivity and lanthanoid contraction. Actinoids: Electronic configuration, oxidation states.
Also access the following resources for Class 12 Chapter 8 The d- and f-Block Elements at BYJU’S:
Coordination compounds is a challenging area in the modern inorganic chemistry. In this chapter, students will be able to learn about Werner’s Theory of Coordination Compounds, definitions of important terms, nomenclature, isomerism , bonding, stability, importance and applications of coordination compounds. They will also study about the bonding in meta carbonyls which is important for the exams. These concepts are important for CBSE exams and competitive exams so more importance should be given when it comes to scoring marks.
Topics Covered in Class 12 CBSE Chemistry Chapter 9 The Coordination Compounds:
Coordination compounds: Introduction, ligands, coordination number, colour, magnetic properties and shapes, IUPAC nomenclature of mononuclear coordination compounds, bonding; isomerism, importance of coordination compounds (in qualitative analysis, extraction of metals and biological systems).
Also access the following resources for Class 12 Chapter 9 Coordination Compounds at BYJU’S:
The halogen derivatives of hydrocarbons are called haloalkanes. They are classified based on the number of hydrogen atoms present in them. The aromatic compounds in which the halogens are attached directly to the carbon atom of the aromatic ring are called haloarenes. In this chapter, students will also get an idea about the methods of preparation, chemical and physical properties and the organohalogen compounds uses. The reactions involved in the preparation of haloarenes and haloalkanes are explained clearly in this chapter to help students perform well in the exams.
Topics Covered in Class 12 CBSE Chemistry Chapter 10 Haloalkanes and Haloarenes :
Haloalkanes: Nomenclature, nature of C-X bond, physical and chemical properties, mechanism of substitution reactions. Haloarenes: Nature of C-X bond, substitution reactions (directive influence of halogen for monosubstituted compounds only). Uses and environmental effects of – dichloromethane, trichloromethane, tetrochloromethane, iodoform, freons, DDT.
Also access the following resources for Class 12 Chapter 10 Haloalkanes and Haloarenes at BYJU’S:
The c lassification of alcohols and phenols are based on the number of -OH groups present. Compounds which have one -OH group are called monohydride alcohols and phenols. The compounds which have two, three or more -OH groups are called dihydric, trihydric or polyhydric alcohols and phenols. Students will study about the reactions involved in the process of making alcohols from phenols, alcohols and ethers. It will also help students to learn about the physical properties of alcohols, phenols and ethers.
Topics Covered in Class 12 CBSE Chemistry Chapter 11 Alcohols, Phenols and Ethers :
Alcohols: Nomenclature, methods of preparation, physical and chemical properties (of primary alcohols only); identification of primary, secondary and tertiary alcohols; mechanism of dehydration, uses, some important compounds – methanol and ethanol.
Phenols: Nomenclature, methods of preparation, physical and chemical properties, acidic nature of phenol, electrophilic substitution reactions, uses of phenols.
Ethers: Nomenclature, methods of preparation, physical and chemical properties, uses.
Also access the following resources for Class 12 Chapter 11 Alcohols, Phenols and Ethers at BYJU’S:
In organic chemistry, aldehydes, ketones and carboxylic acids are of utmost importance. Aldehydes and Ketones can be obtained by the hydration of alkynes, ozonolysis of alkenes and by the oxidation of alcohols . Carboxylic acids can be obtained by the oxidation of aldehydes or primary alcohols. This chapter is very important and carries more marks in the board exam. For this purpose, students have to learn all the concepts and revise them on a regular basis for a good score.
Topics Covered in Class 12 CBSE Chemistry Chapter 12 Aldehydes, Ketones and Carboxylic Acids :
Aldehydes and Ketones: Nomenclature, nature of carbonyl group, methods of preparation, physical and chemical properties, and mechanism of nucleophilic addition, reactivity of alpha hydrogen in aldehydes; uses. Carboxylic Acids: Nomenclature, acidic nature, methods of preparation, physical and chemical properties; uses.
Also access the following resources for Class 12 Chapter 12 Aldehydes, Ketones and Carboxylic Acids at BYJU’S:
The derivatives of ammonia are amines which are obtained by the replacement of hydrogen. From this chapter, students will be able to understand the nomenclature, structure and properties of amines . Amines are an important organic compound which contains nitrogen. Numerous examples of determining the basicity of amines, the reaction and synthesis of amines are explained briefly in this chapter. Students will obtain a good hold on these concepts by answering the questions present at the end of the chapter.
Topics Covered in Class 12 CBSE Chemistry Chapter 13 Amines :
Amines: Nomenclature, classification, structure, methods of preparation, physical and chemical properties, uses, and identification of primary, secondary and tertiary amines. Cyanides and Isocyanides will be mentioned at relevant places in context. Diazonium salts: Preparation, chemical reactions and importance in synthetic organic chemistry
Also access the following resources for Class 12 Chapter 13 Amines at BYJU’S:
The organic compounds which are present as essential constituents in different cells of the living organism are called biomolecules . These include proteins, carbohydrates, vitamins, enzymes and nucleic acids. The interaction of biomolecules constitute the molecular logic of life processes. Simple molecules such as mineral salts and vitamins play an important role in the function of organisms. The structure and functions of the biomolecules are covered in this chapter as per the latest CBSE guidelines.
Topics Covered in Class 12 CBSE Chemistry Chapter 14 Biomolecules :
Carbohydrates: Classification (aldoses and ketoses), monosaccharides (glucose and fructose), oligosaccharides (sucrose, lactose, maltose), polysaccharides (starch, cellulose, glycogen); importance. Proteins: Elementary idea of α – amino acids, peptide bond, polypeptides, proteins, primary structure, secondary structure, tertiary structure and quaternary structure (qualitative idea only), denaturation of proteins; enzymes. Vitamins: Classification and functions. Nucleic Acids: DNA and RNA .
Also access the following resources for Class 12 Chapter 14 Biomolecules at BYJU’S:
This chapter includes the concepts like – monomer, polymer and polymerisation. Its classification is based on the source, structure and polymerisation. The types of polymerisation are – addition polymerisation and condensation polymerisation. The important concepts of this chapter are explained clearly in the NCERT textbook. Students who aspire to score good marks in the exams are recommended to learn this chapter thoroughly and have a clear idea of these concepts.
Also access the following resources for Class 12 Chapter 15 Polymers at BYJU’S:
The sphere of human life is influenced by Chemistry. The principles of Chemistry have benefitted humans in a lot of ways. The concepts which are discussed in this chapter are – drugs and their classification , drug target interaction, the therapeutic action of different classes of drugs, chemicals in food and cleansing agents. Chemistry is a tough subject, and it requires lots of practice to remember the chemical reactions and formulas. So making use of the NCERT Solutions at BYJU’S will provide you with a strong grip on the important topics.
Also access the following resources for Class 12 Chapter 16 Chemistry in Everyday Life at BYJU’S:
Each chapter from the NCERT Class 12 textbook contains a lot of concepts which might cause more stress in the students’ mind. So it is necessary to first know the tips and tricks to remember all the concepts efficiently. Students can download NCERT Class 12 Books here.
The Class 12 NCERT Solutions for Chemistry provided by BYJU’S feature:
Note: CBSE Class 12 Chemistry students can bookmark this page in their browser to easily access NCERT Solutions for Class 12 Chemistry in the future.
Class 12 is a crucial stage in the life of a student. To help them grasp all the concepts effectively, the CBSE board has divided the entire course into sections having marks according to the exam pattern. All the chapters are divided based on the marks weightage and importance from the CBSE exams perspective. The purpose of doing this is to provide a quality education for Class 12 students and help them achieve their future goals. It also provides a strong foundation of basic concepts which are important for the exams.
1 | Solutions | 7 |
2 | Electrochemistry | 9 |
3 | Chemical Kinetics | 7 |
4 | d-and f-Block Elements | 7 |
5 | Coordination Compounds | 7 |
6 | Haloalkanes and Haloarenes | 6 |
7 | Alcohols, Phenols and Ethers | 6 |
8 | Aldehydes, Ketones and Carboxylic Acids | 8 |
9 | Amines | 6 |
10 | Biomolecules | 7 |
BYJU’S NCERT Solutions are considered by many as the best solutions for CBSE students. The accuracy and reliability of the content provided here are unparalleled. Students will be able to complete the NCERT Class 12 Chemistry Syllabus and revise them accordingly to score good marks in the exams. Some key attributes of the NCERT Solutions provided by us are listed below.
At BYJU’S, top-notch faculty design solutions in order to help students perform well in the CBSE exams. They make it easier for the students to understand the concepts and grasp them. The solutions are 100% accurate as they completely follow the CBSE syllabus and guidelines.
The solutions at BYJU’S are student-friendly because the faculty make use of simple language to help students understand the concepts. All the difficult questions are explained with many examples so that students do not face any further doubts about the concept. The solutions not only help students to gain marks but will also help them in their higher education.
Students who are not able to answer the questions from the textbook can refer to the NCERT Solutions available at BYJU’S. The solutions are prepared in order to assist students with the various types of questions that would appear in the exam. It helps them to understand the method of approaching questions in the final exam.
Have any questions/issues regarding our NCERT Solutions for Class 12 Chemistry? Our support team is always available to resolve your queries. Register with BYJU’S and get in touch with them NOW!
How many chapters are present in the ncert solutions for class 12 chemistry , is the ncert solutions for class 12 chemistry important for the students, what are the advantages of using byju’s ncert solutions for class 12 chemistry , can i use the ncert solutions for class 12 chemistry while revising the concepts for the exam.
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Mere Bacchon, you must practice the CBSE Case Study Questions Class 12 Maths Relations and Functions in order to fully complete your preparation . They are very very important from exam point of view. These tricky Case Study Based Questions can act as a villain in your heroic exams!
I have made sure the questions (along with the solutions) prepare you fully for the upcoming exams. To download the latest CBSE Case Study Questions , just click ‘ Download PDF ’.
Mcq set 1 -, mcq set 2 -, checkout our case study questions for other chapters.
First, learn to sit for at least 2 hours at a stretch
Solve every question of NCERT by hand, without looking at the solution.
Solve NCERT Exemplar (if available)
Sit through chapter wise FULLY INVIGILATED TESTS
Practice MCQ Questions (Very Important)
Practice Assertion Reason & Case Study Based Questions
Sit through FULLY INVIGILATED TESTS involving MCQs. Assertion reason & Case Study Based Questions
After Completing everything mentioned above, Sit for atleast 6 full syllabus TESTS.
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Class 12 is an important phase for the students. After this year of the academic curriculum, they will enter professional courses and pursue a career. It means the students who have chosen the science stream will need to strengthen their conceptual foundation well. Download the Class 12 Important Questions for Maths, Biology, Chemistry, and Physics to practice and strengthen your concepts. This is how you can ace the board and competitive exams.
The CBSE (Central Board of Secondary Education) board examinations are a gateway to India's esteemed universities. The CBSE Important Questions Class 12 solutions in free PDF download at Vedantu includes chapterwise solutions for Science (Physics, Chemistry, and Biology) and Maths subjects. This section includes CBSE Class 12 Important Questions Chapterwise Solutions with step-by-step explanations. Chapter-wise important questions Class 12 with answers are available for free PDF download on Vedantu.
The CBSE Class 12 important chapterwise solutions include commonly asked questions in previous years' papers of Maths Physics, Chemistry, and Biology. As per the analysis of previous year question paper patterns, our subject experts at Vedantu have prepared these important questions. These important question of Physics class 12 also include concepts from the latest updated curriculum of CBSE, thus ensuring students a thorough revision. Students can refer to materials offered by Vedantu to score high marks, including.
Access free essential Class 12 questions for all subjects to enhance your preparation. Utilize the solutions to understand how to tackle these questions and improve your proficiency in the respective subjects. Sharpen your skills by practicing with CBSE Important Questions Class 12, increasing your chances of scoring higher in exams.
CBSE Class 12 Important Questions |
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These Class 12 questions and solutions will enable students to build a strong foundation in the Maths and Sciences and ensure a rigorous preparation for their upcoming Class 12 CBSE board exams.
Not only that but by working through these question bank class 12 solutions in a chapter-wise format, students will excel in various competitive exams held outside the comfort of their classrooms like the JEE, NEET, and different engineering entrance exams. Since concepts to each topic as prescribed in the syllabus are broken down step-by-step, students will be able to understand the material prescribed in their Class 12 syllabus with ease and confidence.
It provides you with various strategies to prepare for your board examinations and other competitive exams.
You will get all the Class 12 questions compiled in one place and will also help you to assess your preparation.
You will get to know the important topics with a hi̱gher probability of being asked in your examinations.
These important questions are compiled by subject matter experts who have analyzed the pattern of the Class 12 Board exams and understand the mindset of the examiner.
Since all the questions are prepared by referring to the NCERT textbooks, these are according to the latest syllabus of the CBSE.
You will come across several practice questions that are not present in your textbooks.
These Class 12 questions are extremely useful for revision before your exams.
By solving these questions, you will come across topics that you might have skipped while studying or you might need to go through again.
The class 12 English important questions break down concepts but they don't teach them from scratch. For those who are looking for additional help with their CBSE preparations, Vedantu provides personalized online tuition from the comfort of one's home in the core science subjects. This means no more hassles or travels after school hours and studying whenever you want, wherever you want. As long as you have an iPad, tablet, desktop PC, Smartphone, or any electronic device which supports WiFi and media playback, you can access our wide range of live streaming tuitions with the click (or tap) of a button. Internal tests and regular assessments are conducted by our teachers to keep a track of a students' progress, and live lessons are recorded for later playback and viewing by Vedantu students.
Are you ready to experience the Vedantu edge today? Simply log on to Vedantu.com and have fun learning.
The subjects taught in the Class 12 syllabus need the highest support from the complete study material. Without the proper study material, one will not be able to comprehend the content and context of the chapters. Once the chapters are prepared well, students will also need a platform to judge their preparation level and find out the gaps.
This is where the Class 12 questions are framed by the experts following the latest CBSE syllabus for all subjects will be the best bet. These questions can be solved at home to practise and to strengthen the preparation level. Students will also be able to use these questions as the perfect guide to finding out which part of a particular chapter or subject needs more attention.
The Important Questions Class 12 with Answers will also help students to learn how to frame the right answers for the fundamental questions. The simpler format and stepwise method of explaining the formulas, concepts, and contexts will help students focus on the topics well and increase their answering skills perfectly.
Focus on the chapters you want to study and complete preparing them. Proceed to solve the CBSE important questions Class 12 available here and refer to the solutions. Test your preparation level by comparing your answers with the solutions.
Resolve doubts related to these questions by referring to the solutions instantly. Take a step ahead in your preparation by clarifying your queries faster.
Follow the easier answering format developed by the experts. These Class 12 question formats have been compiled following the latest CBSE guidelines for all subjects of Class 12. Hence, you can score more by sticking to these answering formats and staying ahead of the competition.
Get more probable questions from these lists and broaden your preparation.
Get the free Economics Class 12 Important Questions and for other subjects and focus on your preparation. Learn how to solve such questions from the solutions and develop your answering skills in these subjects. Practise answering the English Important Questions Class 12 and learn to score more in the exams.
Study materials for CBSE Class 12 students are available here. These resources are designed to help you understand and excel in your academic subjects. Whether you're preparing for exams or looking to enhance your knowledge, our materials cover a range of topics from various subjects. Access these materials to make your learning experience more effective and enjoyable.
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Vedantu's CBSE Class 12 Important Questions for 2024-25 serve as a valuable resource for students. These curated questions cover key topics, providing a focused approach to exam preparation. With a user-friendly interface, students can easily access and practice these essential questions, ensuring a thorough understanding of the curriculum. The emphasis on CBSE guidelines ensures relevance and alignment with exam patterns. This resource proves beneficial for class 12 students, offering a strategic tool to enhance their exam readiness. Vedantu's commitment to quality education is evident through these thoughtfully compiled and accessible class 12 important questions.
1. What are the benefits of Practising Important Questions for CBSE Class 12 Board Exam?
Vedantu curates a set of important questions for Class 12 subjects. Students must practice these questions as they provide ample revision and help students in scoring well in the subject. These questions are solved by highly experienced subject matter experts. By referring to the important questions PDF for Class 12 Maths, Physics, Chemistry, and Biology, students will be able to practice for board exams as well as competitive exams like JEE Main and Advanced and NEET, etc. These important question PDFs give an idea of what kinds of questions to expect in the exams.
2. Where can I avail Important Questions for Class 12 CBSE Subjects?
Vedantu is a premier online learning platform which provides a well-prepared set of Important Questions for Class 12- all major subjects. Students can rely on Vedantu as it offers exceptional exam materials and relevant questions that can be asked in the exams. Vedantu provides Important Questions for Class 12 with solutions so that students do not face any difficulty attempting these questions. These solutions are provided by subject experts. These questions aid in exam preparation and provide thorough revision during board exams. You can download the free PDFs of Important Questions for CBSE Class 12 subjects including Maths, Physics, Chemistry and Biology.
3. What are the main Subjects for which Class 12 CBSE students can avail important Questions?
At Vedantu, students can find question banks for all the core subjects of CBSE Class 12. These extra questions PDF ensure that students do not miss any important questions from exam point of view while studying. The main subjects for which students can find Important Questions Class 12 PDF are Maths, Physics, Chemistry, Biology, Business Studies and Economics. Students will score excellent marks by downloading the free PDFs of solved important questions and practising them during exams.
4. Is solving Important Questions enough for Scoring Well in Board Exams?
While solving important questions PDFs available on platforms like Vedantu is a great way to boost scores in board exams, students must not completely rely on them. Students must focus primarily on improving their concepts. For this, reading NCERT textbooks concepts is a must. Moreover, students should practise each and every problem given in the textbooks. In case of any difficulties in solving the problems, students can refer to the solutions PDFs provided by the best online educational platforms like Vedantu.
5. How to make the best use of the Important questions?
Once you have studied any chapter from your textbook, solve all the questions present in your textbook. You can refer to Vedantu’s Solutions to get the best possible solutions to questions in your NCERT books. Once you have solved all the questions in your textbook, start solving important question of Class 12 . Mark the questions you are unable to solve and go through the related topics in your textbooks and your notes. Make sure to go through every question in the Important Questions.
6. How can I download study material for Class 12?
You can download the study material for Class 12 on Vedantu. Here, you will discover relevant content in simple and easy language. Follow the provided steps to download the study material.
First, visit the official website of Vedantu. On this website, you will discover the learning materials including notes, significant questions, summaries of different concepts, and textbook questions with answers.
At the same time, you’ll see a list containing all the subjects of Class 12.
Choose your subject and click on that subject’s icon.
After selecting the subject, choose the chapters for which you require the content.
Click on the download option to avail the study stuff.
7. How can you top in Class 12?
Many Class 12 students aspire to get top ranks in their respective streams. They search for different tips so they can accomplish their dream. Here are some tips to help you with this.
It is recommended to start your preparation at the beginning of the academic year. This will allow you to study and complete every chapter on time.
Try to attend every lecture at your school.
Revise concepts when you reach your home.
Never hesitate to ask your queries from the respective subject teacher.
Practise the NCERT textbook questions and answers to have a grip on the subject.
Practise sample papers to understand the exam question paper format.
8. How to make a study plan for Class 12?
Here’s how you can make a study plan for Class 12.
First, you must know the time when you feel like studying. Some students may prefer studying at night. While some may like studying early in the morning.
Make changes to your current study timetable. Make sure that your timetable includes breaks between study hours.
Try to avoid studying for longer durations. As this will exhaust your mind.
Take out at least one hour a day to study each subject. You can change the study duration depending on the difficulty level of the subject.
Start studying those subjects or chapters first which you find easy.
9. What are the advantages of referring to the NCERT books for Class 12?
There are numerous advantages of referring to the NCERT books for Class 12. These are as follows.
The NCERT Books of Class 12 helps students to clarify their concepts of different chapters in different subjects.
The content written in the NCERT books for Class 12 is easy to comprehend so that the students may not find any difficulties while reading the chapters.
These books are created by professionals who have curated the content after doing deep research on various topics.
The NCERT books provide accurate and clear information about the chapters. Easy NCERT solutions are available on Vedantu for Class 12 all chapters and subjects.
10. Is Class 12 difficult?
The difficulty level of Class 12 varies from student to student. Some students who are excellent in academics will find this class easy. However, some students may find Class 12 tough due to a lack of knowledge about the chapters taught to them. The students who are weak in academics are recommended to commence studying at an early phase. This way will help them to read and understand each and every concept of the chapter thoroughly. Additionally, they must clarify their study-related issues with their mentors. Moreover, they should do a proper revision before any class test or exam and analyze their preparation level. By following these suggestions, Class 12 will become easy for all the students.
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A solution of glucose is prepared with 0.052 g at glucose in 80.2 g of water. (K f = 1.86 K kg mol -1 and K b = 5.2 K kg mol -1) The following questions are multiple choice questions. Choose the most appropriate answer: (i) Molality of the given solution is. (a) 0.0052 m. (b) 0.0036 m.
Case Study Question 1: Read the passage given below and answer the following questions: The properties of the solutions which depend only on the number of solute particles but not on the nature of the solute are called colligative properties. Relative lowering in vapour pressure is also an example ofcolligative properties.
Class 12 Chemistry Case Study Questions for Term 1 exam includes The Solid State, The P block elements, Haloalkanes and Haloarenes, Biomolecules, etc. Questions for all these chapters are given in the PDF file that are available here for free to download. Term 1 exam is about to be held in November-December this year.
This will help them to understand the type of Case Study questions that can be asked in Grade 12 Chemistry examinations. Our expert faculty for standard 12 Chemistry have designed these questions based on the trend of questions that have been asked in last year's exams. The solutions have been designed in a manner to help the grade 12 ...
Here, we have provided case-based/passage-based questions for Class 12 Chemistry Chapter 2 Solutions. Case Study/Passage-Based Questions. Case Study 1: At 298 K, the vapour pressure of pure benzene, C 6 H 6 is 0.256 bar and the vapour pressure of pure toluene C 6 H 5 CH 3 is 0.0925 bar. Two mixtures were prepared as follows:
In Coming Exams, CBSE will ask two Case Study Questions in the CBSE class 12 Chemistry questions paper. Each theme will have five questions and students will have a choice to attempt any four of them. Here are some example questions Based On Case Study Problems: Question-1 Read the passage given below and answer any four out of the following ...
The solutions are in the hint manner as well as contain full examples too, refer to the link to access the Case Study on Solutions Class 12 Chemistry with Solutions in PDF - it's free. Features of Class 12 Solutions Case Study Questions . Certain features of Class 12 Solutions Case Study Questions are - Available for free 24×7
Ans. The solution will show negative deviation from Raoult's law. 5. Which type of deviation will be shown by the solution, if yAB < y AA. Ans. Solution will show positive deviation. Solutions - Chapter 2 CBSE Class 12 Chemistry Case-based Questions Read the given passages and answer the questions that follow: A solution which obeys Raoult ...
Ans. pV = nRT, Where, p = Osmotic pressure, n = Number of moles, V = Volume of solution in litre, R = Gas constant, T = Temperature. Case Study Question 1 on Solutions - Chapter 2 CBSE Class 12 Chemistry Case-based Questions Read the given passages and answer the questions that follow: The spontaneous flow of the solvent through a ...
CBSE Case Study Class 12: Here, you will get class 12 case study questions and answers for maths, physics, chemistry and biology pdf at free of cost. Along with you can also download case study questions for class 12 chapter wise for getting higher marks in board exams.
Class 12 Chemistry case study-based questions play a vital role in your overall understanding of the subject. They enable you to: Apply Theoretical Knowledge: Case studies allow you to apply the concepts you have learned in real-life situations, bridging the gap between theory and practical application. Develop Analytical Skills: By critically ...
Class 12 Chemistry : Case Study Questions of Solutions | Boards 2023Chemistry Exposed - Important Topicshttps://youtu.be/hW8HMmFCpaUPhysical Chemistry by Bha...
CBSE will ask Case Study Questions class 12 Chemistry in session 2020-21. These will be the first two questions in the board exam question paper. The first question will have 5 MCQs out of which students will attempt any 4 questions. The second question will carry 5 Assertion & Reason type questions with the choice to attempt any four.
Question 7. Out of BaCl 2 and KCl, which one is more effective in causing coagulation of a negatively charged colloidal Sol? Give reason. (Delhi 2015) Answer: BaCl 2 is more effective in causing coagulation because it has double +ve charge than K+.. Solutions Class 12 Important Questions Short Answer Type - I [SA-I] Question 8. Differentiate between molality and molarity of a solution.
Here, we have provided case-based/passage-based questions for Class 12 Chemistry Chapter 1 The Solid State. Case Study/Passage-Based Questions. Case Study 1: In a hexagonal system of crystals, a frequently encountered arrangement of atoms is described as a hexagonal prism. Here, the top and bottom of the cell are regular hexagons and three ...
Discount offer on this book in a bundle, click to view. ScoreMore Case Study Chapter-wise Practice Questions Chemistry Class-12 is curated with 800+ Chapter-wise MCQs related to Case study/ Passage based and Assertion & Reason with hints and explanations based on latest pattern of CBSE (2020-2021). See Complete Description of Product. Qty: -. +.
More Case Study Questions. These are only some samples. If you wish to get more case study questions for CBSE class 12 maths, install the myCBSEguide App. It has class 12 Maths chapter-wise case studies with solutions. 12 Maths Case Study Questions 12 Maths Exam pattern. Question Paper Design of CBSE class 12 maths is as below.
Class 12th Maths Case Study. In class 12th Maths Case Study the questions are based on the real world scenarios. A passage filled with information or data is provided to the students. On the basis of that paragraph upto 5 questions are developed which should be answered by the students.
BST Class 12 Case studies: You already know that as per new pattern , questions based on case study can be asked in exam .These type of questions are introduced to check students ability to understand and apply his/her knowledge to given situation . Do not fear the questions based on case study. If you are well prepared and have through understanding of chapter, those questions will not be ...
Merits of BYJU'S NCERT Solutions for Class 12 Chemistry. The Class 12 NCERT Solutions for Chemistry provided by BYJU'S feature: In-depth explanations for all logical reasoning questions. Step-by-step processes for solving numerical value questions. Concise and to-the-point answers to all theoretical questions.
Mere Bacchon, you must practice the CBSE Case Study Questions Class 12 Maths Relations and Functions in order to fully complete your preparation.They are very very important from exam point of view. These tricky Case Study Based Questions can act as a villain in your heroic exams!. I have made sure the questions (along with the solutions) prepare you fully for the upcoming exams.
The main subjects for which students can find Important Questions Class 12 PDF are Maths, Physics, Chemistry, Biology, Business Studies and Economics. Students will score excellent marks by downloading the free PDFs of solved important questions and practising them during exams. 4.
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