Question

1. Few children were inflating balloons.
2. The baker was baking a cake.

Among the aforementioned observations, which are the examples of reversible change?

• A. Only observation 1 is a reversible change.
• B. Only observation 2 is a reversible change.
• C. Both observation 1 & observation 2 are reversible changes.
• D. Both observation 1 & observation 2 are not reversible changes.

Answer 1

The correct option is A

Only observation 1 is a reversible change.

Reversible changes refer to only those changes that can be undone. Among the given options,

1. Inflating balloons is a reversible change as once you remove the pressure from the balloon's mouth, the air escapes out and the balloon comes back to its original shape and size. Hence the change caused by inflating a balloon can be undone.
2. Baking is not a reversible change as once the cake is made, they cannot be made back to its original ingredients.