Question

A. Chose the correct answer.
1. Which of the following occurs due to evaporation?
a. Drying of clothes
b. Burning of paper
C. Conversion of ice into water
d. Conversion of water into ice
2. Burning of coal is an example of________.
a.a chemical change
b. a reversible change
c.a physical change
d. an undesirable change
3. Boiling is a ________.
a. physical change
b. chemical change
c. irreversible change
d. both (a) and (b)
D
E.
4. Which of the following is an irreversible physical change?
a. Melting of butter
b. Cutting of wood
C. Freezing of water
d. Stretching of a rubber band
5. Which of the following does not affect evaporation?
a.Surface area
b. Nature of vessel
c. Temperature
d. Humidity​

Answer 1

Answer:

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conversion of ice into water

chemical change

physical change

freezing of water

humidity

Answer 2

Answer:

Question:

1. Which of the following occurs due to evaporation?

Answer:

Conversion of ice into water occurs due to evaporation.

And therefore, option (c) Conversion of ice into water is the correct answer.

Question:

2. Burning of coal is an example ?

Answer:

Burning of coal is an example of a chemical change .

And hence, option (a) a chemical change is the correct answer.

Question :

3. Boiling is a ?

Answer:

Boiling is a physical change.

And therefore, option (a) physical change is the correct answer.

Question:

4.Which of the following is an irreversible physical change?

Answer:

Cutting of wood is an irreversible physical change.

And therefore, option (b) is the correct answer.

Question :

5. Which of the following does not affect evaporation?

Answer:

Nature of vessel does not affect the evaporation.

And therefore, option (b) Nature of vessel is the correct answer.