Question

Alum in aqueous solution gives positive test for
(A) `K^(+)` (B) `Al^(3+)` (C) `SO_(4)^(2-)`
A. A only
B. B only
C. A and B
D. A, B and C

Answer 1

Correct Answer - 4
Potash alum: `K_(2)SO_(4).Al_(2)(SO_(4))_(3).24H_(2)O`