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Solution


Q.

Assertion: Silver articles become black after some time when exposed to sunlight.
Reason: It is because silver reacts with carbonates present in the air.
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.

(3)

Silver reacts with sulphur in the air forming silver sulphide, which causes blackening (tarnishing).