Class 9 Exam  >  Class 9 Notes  >  Lab Manuals for Class 9  >  Viva Voce: Separation of Mixture

Viva Voce: Separation of Mixture | Lab Manuals for Class 9 PDF Download

Q.1. What is the principle of centrifugation?

Difference in the densities of substances in a mixture.


Q.2. Name two sublimating substances.

Camphor, ammonium chloride.


Q.3. How will you separate a mixture that has soluble substance A and insoluble substance B?

It can be separated by dissolving in distilled water, followed by filtration and then evaporation.


Q.4. What is the principle for the above separation?

Immiscible liquids and difference in their densities.


Q.5. What is the principle for decantation?

Settling down of particles under gravity.


Q.6. Name the technique used to separate cream from milk.

Centrifugation


Q.7. How will you separate a mixture of sand and camphor?

By sublimation


Q.8. How can you separate the mixture of iron filings and sand?

By magnet


Q.9. What is the principle for filtration?

The size of particles in the solution.


Q.10. How will you separate a mixture of oil and water?

By using separating funnel.

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