Question

D. If assertion is false but reason is true.
Assertion: Silver becomes black in colour when exposed to atmosphere.
Silver reacts with H2S gas to form Ag S which is black in colour.
d) A
b)B
c)С
d)D
Reason:​

Answer 1

Answer:

Silver article turns black when kept in the air because silver article reacts with sulphur compounds such as hydrogen sulphide (H2S) present in air. The phenomenon is called corrosion. For silver particularly, it is called tarnishing of silver.

Answer 2

Explanation:

Answer: (a) Silver article turns black when kept in the air because silver article reacts with sulphur compounds such as hydrogen sulphide (H2S) present in air. The phenomenon is called corrosion. For silver particularly, it is called tarnishing of silver.