Question

Assertion:Charcoal has equal heating power than wood.
Reason:Charcoal burns without producing flame or smoke.
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If the assertion and reason both are false.

Answer 1

Correct Answer - D
Charcoal has twice heating power than wood. The wood is heated and changed to charcoal. Charcoal burns without producing flame or smoke. It is used in medicine, iron and steel industry and for absorbing impurities of air and water.