Question

Q16. Assertion: Burning of coal is a physical change.
Reason: When coal is burnt, the chief component, carbon is changed to
carbon dioxide.
(A) Both assertion and reason are correct and the reason is the correct
explanation for the assertion.
(B) Both assertion and reason are correct but the reason is not the
correct explanation for the assertion.
(C) Assertion is correct but the reason is incorrect.
(D) Assertion is incorrect but the reason is correct.​

Answer 1

Answer:

When coal is burnt, the chief component carbon reacts with the oxygen present in the air and produces carbon dioxide. ... There is a change in chemical composition and this reaction cannot be reversed as carbon dioxide cannot be converted into coal again. Hence, the burning of coal is a chemical change.

Explanation: