Q.

Assertion: Ionic compounds generally have high melting points.
Reason: It is because they are ionic in nature.

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.

(2)

Ionic compounds are made up of positive and negative ions. There is a strong electrostatic force of attraction between them. A lot of heat energy is required to break this force of attraction and to melt or boil the ionic compound. As a result, ionic compounds have high melting points. Thus the assertion and reason are correct, but reason is not the correct explanation of the assertion.