Question

Which of the following is an example of a reversible change?

• A. Grinding of grain into flour.
• B. Making a light mark on a paper with a pencil
• C. Cutting a piece of paper
• D. Ripening of fruits

Answer 1

The correct option is B

Making a light mark on a paper with a pencil

• The grinding of grain into flour is an irreversible change as we cannot get back the original grain from its powdered form.
• Making a light mark on a piece of paper with a pencil is a reversible change as it can be erased.
• Cutting a piece of paper is an irreversible change because we cannot get the original paper after it is cut.
• Ripening of fruits is an irreversible change because once a fruit has ripened, it cannot go back to its unripe form.