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CBSE Class 12 Chemistry Viva Questions 2024 Check PDF

Author : Palak Khanna

Updated On : September 16, 2023


Summary: This article serves as an ultimate guide to preparing for the CBSE Class 12 Chemistry Viva Questions 2024, featuring a tailored preparation plan, a list of 15 essential Viva questions, and an exhaustive FAQ section. It aims to make your Viva experience less daunting and more fruitful.

The CBSE Class 12 Chemistry practical exam involves both hands-on experiments and a Viva Voce session. While the former assesses your experimental skills, the latter tests your understanding of chemical principles and concepts.

The Viva can often be intimidating due to its unpredictability. However, thorough preparation can make this experience not only manageable but also highly scoring. 

This article provides a well-rounded preparation strategy and a list of must-practice CBSE Class 12 Chemistry Viva Questions 2024!

CBSE Class 12 Chemistry Viva Questions 2024 Preparation Process

Here is the prep plan for CBSE Class 12 Chemistry Viva Questions 2024. 

Understand the Syllabus

Knowing what topics you could be quizzed on is the first step. Familiarise yourself with the syllabus.

Revisit Laboratory Experiments

Understand the purpose, principle, and procedure of each experiment you have performed during the academic year.

Check: CBSE class 12 Chemistry Tips and tricks

Theoretical Preparation

Strengthen your basics by revising core chemical concepts and theories.

Mock Viva

Simulate Viva situations with friends. This helps you think on your feet.

Check: How to score 100 in Chemistry Class 12 CBSE

Consult Teachers

Interact with your teachers to know the type of questions that are commonly asked.

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cuet online coaching

Review Past Questions

If available, go through Viva questions asked in previous years.

Check: How to get 90+ Marks in Economics Class 12 CBSE Board?

Body Language

Work on maintaining a composed and confident demeanour.

15 Sample CBSE Class 12 chemistry viva questions

1. CBSE Class 12 Chemistry Viva Questions 2024 - What is qualitative analysis? 

The type of analysis that deals with the methods that are used to determine the constituents of a compound. 

2. CBSE class 12 chemistry practical viva questions - What is a radical? 

A radical may be defined as an atom or group of atoms that carries a charge and behaves as a single unit in a chemical reaction. 

Check: CBSE Class 12 Applied Mathematics

3. CBSE class 12 chemistry practical viva questions with answers - What are acidic and basic radicals? 

A salt consists of two parts known as radicals. The positively charged part of a salt (Cation), which has been derived from a base, is known as a basic radical. 

The negatively charged part of the salt (anion), which has been derived from an acid, is known as an acidic radical. 

4. CBSE Class 12 Chemistry Viva Questions 2024 - Why do inorganic salts ionise when dissolved in water?

Due to the high dielectric constant of water, the force of attraction holding the two ions in a salt decreases; thus, the two ions separate. 

5. What is the colour of iron salts? 

Ferrous salts are usually light green. 

Check: CBSE Divides Academic Year Into Two Sessions

6. Chemistry class 12 CBSE viva questions - What is the colour of nickel salts? 

Bluish green or green. 

7. Chemistry practical viva questions class 12 CBSE - What is sublimation? 

It is the process by which a salt directly changes into a gaseous phase without melting. 

8. Class 12 CBSE Chemistry viva questions - Name the radical that produces carbon dioxide on heating. 


Check: CBSE 2023 Toppers Talk

9. Viva questions for chemistry practicals class 12 CBSE - What is aqua regia? 

Aqua regia is a mixture of conc. HCI and conc. HNO3 in ratio 3:1

10. CBSE Class 12 Chemistry Viva Questions 2024 - What is the flame test? 

The flame test is a test for detecting the presence of certain metals in compounds by the colouration they give to a flame. 

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cuet mock test

11. Viva questions for Class 12 chemistry practicals CBSE - Why is platinum metal preferred to other metals for the flame test? 

Because platinum does not react with acids and does not self-impart any characteristic colour to the flame. 

Check: CBSE Chemistry Class 12 Syllabus

12. CBSE class 12 chemistry practical viva questions - Name the acid radicals detected with dil. Sulphuric acid? 

Sulphide ion & Carbonate ion. 

13. CBSE class 12 chemistry practical viva questions with answers - What is Tollen's reagent? 

The Ammonical AgNO3 solution is called Tollen's reagent. 

14. Viva questions for class 12 chemistry practicals CBSE - What is a standard solution? 

A solution whose strength is known is called a standard solution. 

Check: CBSE class 12 Chemistry Reference books

15. CBSE Class 12 Chemistry Viva Questions 2024 - What is titration? 

The process of adding one solution from the burette to another in the conical flask in order to complete the chemical reaction involved is known as titration. 


The Viva Voce in the Class 12 Chemistry practical exam is not just an evaluation but an opportunity to demonstrate conceptual clarity and build confidence. Following the preparation plan outlined in this article and practising the sample questions will help you face the Viva with ease and assurance. Mastering your CBSE Class 12 Chemistry Viva Questions 2024 preparation with the aid of this article will bring you one step closer to excelling in your CBSE Class 12 Chemistry practical exams. Good luck!

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Frequently Asked Questions

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