Ncert Exercises & Solutions

Assertion (A):	Excessive use of chlorinated synthetic pesticides causes soil and water pollution.
Reason (R):	Such pesticides are non-biodegradable.

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.