Question

Assertion : Zone refining method is very useful for producing semiconductors.
Reason : Semiconductors are of high purity.
A. Both assertion and reason are true and reason is the correct explanation of assertion.
B. Both assertion and reason are true but 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

Correct Answer - B
(b) BOth assertion and reason are true but reason is not the correct explanation of assertion.
Zone refining method is very useful for producing semiconductors of high purity as in this process pure metal crystallises while impurities pass on into adjacent molten zone when impure metal rod is heated.