Page 91 - Viva ICSE Science 4 : E-book

B. Tick () the correct answer.

1. The solvents are generally ____________.

(a) solid (b) liquid (c) gas

2. Which of the following will not mix with water?

(a) Coff ee powder (b) Sugar (c) Chalk powder

3. Milk and water are ____________ liquids.

(a) miscible (b) immiscible (c) insoluble

4. Separation of two substances by the process of settling down the insoluble
substance is called ____________.

(a) fi ltration (b) evaporation (c) sedimentation

5. If salt water is evaporated, what is left behind?

(a) Water (b) Salt crystals (c) Nothing

6. Nitrogen is a gas which ____________.

(a) dissolves in water

(b) does not dissolve in water

(c) forms a layer on water

C. Answer the following in one word.

1. Name an immiscible liquid. ______________

2. Substances that do not dissolve in water are called ______________

3. Name the process of separation, which is carried

out after sedimentation. ______________

4. When two liquids dissolve completely, they are called ______________

5. Name a gas which can dissolve in water. ______________

6. The process of separation by heating is called ______________

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