Ncert Exercises & Solutions

Given below are two statements:

Assertion (A):	Beryllium carbonate is kept in the atmosphere of carbon dioxide.
Reason (R):	Beryllium carbonate is unstable and decomposes to give beryllium oxide and carbon dioxide.

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.