Is matter pure around us? hard

Is Matter Pure Around Us? Quiz (Hard)

1. Which of the following is a colloid?

a) Sugar solution b) Vinegar c) Milk d) Salt solution

2. Which method is used to separate a mixture of two immiscible liquids?

a) Filtration b) Decantation c) Centrifugation d) Distillation

3. The process of separating a mixture of two or more liquids with different boiling points is called:

a) Filtration b) Evaporation c) Distillation d) Sublimation

4. The process of separating a mixture of two or more solids of different sizes by shaking it with a sieve is called:

a) Filtration b) Evaporation c) Decantation d) Sieving

5. Which of the following is a pure substance?

a) Soil b) Milk c) Water d) Air

6. What is the term used for the process of converting a liquid into a gas at a temperature below its boiling point?

a) Condensation b) Sublimation c) Evaporation d) Vaporization

7. Which of the following is a heterogeneous mixture?

a) Air b) Vinegar c) Orange juice with pulp d) Saltwater

8. Which method is used to separate a mixture of two miscible liquids with different boiling points?

a) Filtration b) Decantation c) Sublimation d) Distillation

9. Which of the following methods is used to separate a mixture of a solid in a liquid?

a) Filtration b) Decantation c) Centrifugation d) Distillation

10. Which method is used to separate a mixture of two immiscible liquids with different densities?

a) Filtration b) Decantation c) Centrifugation d) Distillation