Question

Assertion: When Cu powder is heated in air, it turns
black
Reason: copper reacts with H₂S gas of the air
forming black CuS
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not the correct explanation of A
(c) A is true R is False
(d) A is False R is True​

Answer 1

Answer:

option (c) is correct A is true but R is false

Explanation:

when Cu is heated in the air ot turns black because of the formation of CuO copper oxide