Class 9 chemistry viva voce question and answers are concept focused and not question focused, which improves the conceptual knowledge based on the practicals performed by the students. Students can revise each and every chapter viva voce questions by referring to the question answers provided and obtain a confidence on them.
A general viva voce is based on the practicals. Prepare accordingly from the set of viva voce given after each experiment. Class 9 Chemistry Practicals Viva Voce Question and Answers is to judge whether the student has merely copied the experiments from the book or he/she has actually performed it in the laboratory. Also this helps to remember about the experiments performed in the laboratory. Keep revising.
Class 9 Chemistry Viva Questions With Answers
A. Preparation of:
- a true solution of common salt, sugar and alum
- a suspension of soil, chalk powder and fine sand in water
- a colloidal solution of starch in water and egg albumin/milk in water and distinguish between these on the basis of transparency filtration criterion stability
B. Preparation of:
using iron filings and sulphur powder and distinguishing between these on the basis of:
- Appearance, i.e., homogeneity and heterogeneity
- Behaviour towards a magnet
- Behaviour towards carbon disulphide as a solvent
- Effect of heat
C. Perform the following reactions and classify them as physical or chemical changes:
- Iron with copper sulphate solution in water
- Burning of magnesium ribbon in air
- Zinc with dilute sulphuric acid
- Heating of copper sulphate crystals
- Sodium sulphate with barium chloride in the form of their solutions in water
D. Verification of the law of conservation of mass in a chemical reaction
Students will gain a better understanding of the concept by doing the experiments since they will be able to see the changes taking place right in front of their eyes. Their fundamentals will become strong as they learn by doing. They will also develop an interest in the subject as a result of this practice.
Also Check more on:
- Important Questions for Class 12 Chemistry
- Important Questions for Class 11 Chemistry
- Marks-Wise Important Questions for Chemistry
- Class 12 Chemistry MCQs
- Class 11 Chemistry MCQs
- Class 10 Chemistry MCQs
- Class 9 Chemistry MCQs
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