Question

Melting of ice is an example of

• A. Physical change
• B. irreversible change
• C. Chemical change
• D. Undesirable change

Answer 1

The correct option is A

Physical change

The explanation for the correct option:

Option A

• A change, in which only the physical properties of a substance are changed and no new substance is formed is called a physical change.
• The change of state from solid to liquid is called melting.
• In the melting of ice, no new substance formed, only the state changed.

Therefore, option A is correct.

The explanation for the incorrect option:

Option B

• The change that can not be reversed, is called irreversible change.
• For example, burning of paper, ageing of man, etc.

Therefore, Option B is incorrect.

Option C

• A change in which the composition and chemical properties of a substance are changed and one or more new substances are formed, is called a chemical change.
• It is a permanent change.

Therefore, option C is incorrect.

Option D

• The changes that are harmful to us and we do not want to take place are called undesirable changes.
• For example forest fires, and spoiling of food.

Therefore, option D is incorrect.