Q.

Assertion: Ammonia is acidic in nature.
Reason: Ammonia dissolves in water and forms OH-

1 Both assertion and reason are correct and reason is the correct explanation of assertion.  
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.  
3 Assertion is true, but reason is false.  
4 Assertion is false, but reason is true.  

Ans.

(4)

Ammonia is a weak base as it has one pair of electrons through which it can accept a proton. Thus, assertion is false, but reason is true.