Question

Assertion [A]: White phosphorus undergoes spontaneous combustion while paper undergoes complete combustion.
Reason [R]: Burning of paper leaves a lot of soot and ash behind.

Which of the following options is correct ?

• A. Both A and R are true, and R is the correct explanation of A.
• B. A is true but R is false.
• C. A is false but R is true.
• D. Both A and R are true, but R is not the correct explanation of A.

Answer 1

The correct option is C A is false but R is true.

Burning of white phosphorus does not require any external agent and is spontaneous in nature.

Burning of paper leaves a lot of soot and ash behind, and is a type of incomplete combustion.