Class 12^th Chemistry Case Study Question with Solution

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CBSE Class 12 Chemistry Case Study Questions: An Essential Guide

Case study questions in CBSE Class 12 Chemistry help you apply theoretical knowledge to real-world scenarios. These questions cover key topics from Physical Chemistry, Organic Chemistry, and Inorganic Chemistry, testing your problem-solving abilities and conceptual understanding. By practicing case study questions, you can enhance your analytical skills, prepare for CBSE exams, and excel in competitive exams. Our page provides comprehensive solutions, step-by-step explanations, and tips to solve these questions effectively, making it an essential resource for every Class 12 Chemistry student.

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Class XII Chemistry Case Study with solution

Chapter 1 The Solid State
Chapter 2 Solutions
Chapter 3 Electrochemistry
Chapter 4 Chemical Kinetics
Chapter 5 Surface Chemistry
Chapter 6 General Principles and Processes of Isolation of Elements
Chapter 7 The p- Block Elements
Chapter 8 The d and f Block Elements
Chapter 9 Coordination Compounds
Chapter 10 Haloalkanes and Haloarenes
Chapter 11 Alcohols, Phenols and Ethers
Chapter 12 Aldehydes, Ketones and Carboxylic Acids
Chapter 13 Organic Compounds Containing Nitrogen (Amines)
Chapter 14 Biomolecules
Chapter 15 Polymers
Chapter 16 Chemistry in Everyday Life

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CBSE Class 12 Chemistry Case Study: A Comprehensive Guide for Students

The CBSE Class 12 Chemistry Case Study is an essential aspect of preparing for your Chemistry exam. These case study questions are designed to test your ability to apply conceptual knowledge to real-life scenarios, making them a crucial part of your study routine. In this article, we will guide you through CBSE Chemistry Case Study Questions, provide solutions, and help you understand how to approach these types of questions effectively.

What is a CBSE Class 12 Chemistry Case Study?

A Case Study in Class 12 Chemistry refers to a scenario-based question where you are required to analyze and apply your knowledge of Physical, Organic, and Inorganic Chemistry to solve real-world problems. These questions often involve data analysis, conceptual understanding, and critical thinking.

The CBSE Chemistry Case Study questions are usually found in both the board exams and other competitive exams, making them an important area for focused preparation. These case studies can be from any chapter of your CBSE Class 12 Chemistry syllabus, requiring you to integrate your understanding of various concepts.

Why are Case Study Questions Important for CBSE Class 12 Chemistry?

1. Enhances Conceptual Understanding: Case studies assess your grasp of fundamental concepts in Chemistry and test how well you can apply them to practical scenarios.


2. Improves Problem-Solving Skills: These questions sharpen your ability to analyze data, interpret results, and make logical conclusions based on your knowledge.


3. Boosts Exam Confidence: Case studies are common in the CBSE Class 12 Chemistry exam, so practicing them boosts your exam confidence and helps you score better marks.


4. Prepares for Competitive Exams: Many competitive exams include Chemistry Case Study questions, so understanding the case study format is beneficial for other entrance tests.

How to Solve CBSE Class 12 Chemistry Case Study Questions?

1. Read the Question Carefully: Understand the scenario and identify the key concepts being tested.


2. Analyze the Given Data: Carefully examine any chemical data, equations, or graphs provided in the case study.


3. Apply Relevant Concepts: Use your understanding of Physical, Organic, and Inorganic Chemistry to answer the question.


4. Answer Step-by-Step: Break down the solution logically and write your answer in a clear, organized manner.

Example CBSE Class 12 Chemistry Case Study Questions with Answers

1. Case Study 1: Types of Solutions

Question: A student is preparing a solution by dissolving 18 grams of glucose (C₆H₁₂O₆) in 100 grams of water. Identify the type of solution formed, and calculate the molality of the solution.
Answer:

1. Type of Solution: This is a aqueous solution of glucose, a non-electrolyte.


2. Molality Calculation:
   Molality (m) = $\frac{\text{moles of solute}}{\text{mass of solvent in kg}}$
   Moles of glucose = $\frac{18}{180} = 0.1$ moles
   Mass of solvent = 100g = 0.1 kg
   Molality = $\frac{0.1}{0.1} = 1 \, mol/kg$

2. Case Study 2: Chemical Reactions

Question: During a reaction between chlorine and sodium bromide, a yellow precipitate of bromine gas is formed. Write the balanced chemical equation for this reaction.
Answer:
The reaction is a displacement reaction where chlorine displaces bromine from sodium bromide:
$Cl_2 + 2NaBr \rightarrow 2NaCl + Br_2$
The yellow precipitate is bromine gas (Br₂).

3. Case Study 3: Electrochemistry

Question: In a galvanic cell, a zinc electrode is dipped in a solution of zinc sulfate and a copper electrode in copper sulfate. If the zinc electrode is the anode, what is the nature of the reaction occurring at the anode?
Answer:
At the anode (Zinc electrode), oxidation occurs: $Zn (s) \rightarrow Zn^{2+} (aq) + 2e^-$
This is a typical oxidation reaction where zinc loses electrons to form zinc ions.

4. Case Study 4: Thermodynamics

Question: A student is conducting an experiment to determine the enthalpy change for the dissolution of ammonium chloride in water. If the temperature decreases during the dissolution, is the dissolution process endothermic or exothermic?
Answer:
Since the temperature decreases during the dissolution, it is an endothermic process, meaning heat is absorbed from the surroundings.

5. Case Study 5: Organic Chemistry

Question: A compound X has the molecular formula C₆H₆. It undergoes a reaction with bromine water in the presence of sunlight and produces a compound Y. Identify X and Y, and explain the reaction.
Answer:

1. X is benzene (C₆H₆).


2. Y is bromocyclohexane (C₆H₅Br). The reaction is a substitution reaction, where a hydrogen atom in benzene is replaced by a bromine atom in the presence of sunlight (which provides the activation energy for the reaction): $C₆H₆ + Br₂ \xrightarrow{sunlight} C₆H₅Br + HBr$

Conclusion

CBSE Class 12 Chemistry Case Study questions help you apply your theoretical knowledge to practical situations. These questions are a key component of your Chemistry exam and require a strong understanding of Physical, Organic, and Inorganic Chemistry. Practicing CBSE Chemistry Case Study questions regularly will improve your problem-solving skills, boost your exam performance, and prepare you for competitive exams. Utilize the Case Study Questions on our page to strengthen your foundation and excel in the CBSE Class 12 Chemistry exam.