Question

Assertion: Burning of paper is a permanent change.
Reason: The products formed on burning of paper cannot be converted back to paper.

• A. Both assertion and reason are true. Reason is the correct explanation of assertion.
• B. Both assertion and reason are true. Reason is not the correct explanation of assertion.
• C. Assertion is true but reason is false.
• D. Assertion is false but reason is true.

Answer 1

The correct option is A Both assertion and reason are true. Reason is the correct explanation of assertion.

The changes which cannot be reversed or undone are called permanent changes.
When a paper is burnt, ash and some gases are formed which cannot be converted back to paper again. Hence, burning of paper is a permanent change.