Q.

Assertion: Silver bromide is kept in coloured bottles.
Reason: It is because it decomposes in presence of light.

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.

(1)

Silver bromide decomposes in presence of light, so it is stored in coloured bottles to avoid decomposition.