Question

$ CuS is blue in colour.
! All `Cu^(2+)` salts are blue in colour.
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 a correct explanation of A
C. A is true but R is false
D. A is false but R is true.

Answer 1

Assertion : `Cu^(2+)` salts are generally blue in colour, however, CuS is black in colour.