Ncert Exercises & Solutions

Select the correct option based on statements below:

Assertion (A):	The zone refining method is very useful for producing semiconductors.
Reason (R):	Semiconductors are of high purity.

1.	Both (A) and (R) are true and (R) is the correct explanation of (A).
2.	Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.	(A) is true but (R) is false.
4.	(A) is false but (R) is true.