1.

Rekha dropped a metal piece A in the solution of another metal B. After some time a new colour less compound C is formed. A,B,C respectively can be (1) Cu, ZnSO4, CusO4 (2) Mg, NaCl, MgCl2 (3) Mg, CuSO4, MgSO4 (4) Fe, ZnSO4, FeSO4

Answer»

(3) Mg, CuSO4, MgSO



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