[" Four colourless salt solutions are placed in separate test tubes and a strip of copper is placed in each.Which "],[" solution finally turns blue? "]

Four colourless salt solutions are placed in separate test tubes and a strip of copper is dipped in each. Which solution finally turns blue ?

Four colourless salt solutions are placed in separation test tubes and a strip of copper is dipped in each. Which solution finally turns blue? (use data from electrochemical series

The following four colourless salt solutions are placed in separate test tubes and a strip of a copper is placed in each. Which of the following solution will finally turn blue? (1)NaCl (2)AgNO3 (3)ZnSO4 (4)Cd(NO3)2

The following four colourless salt solutions are placed in separate test tubes and a strip of a copper is placed in each Which of the following solutions will finally turn blue ?

Colourless solutions of the following four salts are placed separately in four different test tubes and a strip of copper is dipped in each one of these. Which solution will turn blue?

Colourless solutions of the following four salts are placed separately in four different test tubes and a strip of copper is dipped in each one of these. Which solution turn blue.

If a strip of copper metal is placed in a solution of ferrous sulphate: