Question

Aqueous solution CuSo4, FeSo4, ZnSo4 and Al2(So4)3, are taken in four test tubes, A, B, C and D respectively. An aluminium strips is dipped in each test tube, in which test tube colour change occurs.
1. A & C
2. B & C
3. C & D
4. A & B

Answer 1

hi

Explanation

4. A&B is right✔answer