Assertion: Silicon is preferred over germanium for making semiconductor devices.
Reason: The energy gap for germanium is more than the energy gap of silicon.

Options

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

Answer

B

Explanation

Silicon is preferred over Germanium for making semiconductor devices. The assertion is true.
The energy gap of Germanium is about 0.7 eV, where as the energy gap of Silicon is 1.1 eV. Hence, the reason is false.