Question

1.Pick the changes that can be reversed from the following.

• A. Cutting of tress
• B. Melting of ghee
• C. Burning of candle
• D. Blooming of flower

Answer 1

The correct option is B

Melting of ghee

Hint: A change that can be reversed or can get back to its original state is called a reversible change.

Explanation for correct option:

(B) Melting of ghee is a reversible change, as melted ghee can be frozen again by cooling.

Explanation for incorrect options:

(A) Cutting of trees is an irreversible change, as the chopped trees cannot be reversed back to the same original tree.

(C) Burning of candle is an irreversible change, as the burnt thread and other gases produced during burning of candle cannot be recovered again.

(D) Blooming of flower is an irreversible change, as the bloomed flowers cannot be reversed back to the buds again.

Hence, option (B) is correct.