Ncert Exercises & Solutions

Given below are two statements:

Assertion (A):	Conc HNO₃ makes iron passive.
Reason (R):	HNO₃ forms a protective layer of ferric nitrate on the surface of the iron.

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.