Question

Beating of a drum is an example of

• A. Undesirable change
• B. Reversible change
• C. Periodic change
• D. Non-periodic change

Answer 1

The correct option is D

Non-periodic change

Explanation for correct option:

Option D

• Beating of the drum is an example of non-periodic change.
• Non-periodic changes are the changes that do not take place after a fixed period of time.
• Another example of non-periodic changes are the eruption of volcanoes, occurrence of flood, etc.

Therefore, option D is the correct option.

Explanation for incorrect option:

Option A

• The changes that are harmful to us and we do not want them to take place are called undesirable changes.
• For example, spoiling of food, forest fires, etc.
• Beating of the drum is not an undesirable change.

Therefore, option A is the incorrect option.

Option B

• The changes that can be reversed easily to obtain a substance in its original form are called reversible changes.
• For example, growth of a tree, melting of ice, etc.
• Beating of a drum is not a reversible change.

Therefore, option B is incorrect option.

Option C

• The changes that take place after a fixed interval of time are called periodic changes.
• For example, change of season, the beating of heart, etc.

Therefore, option C is the incorrect option.