Beakers A, B, and C contain zinc sulphate, silver nitrate, and ferrous sulphate solutions respectively.

Copper pieces are added to each beaker. The blue colour will appear in case of:

Beaker A

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Beaker B

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Beaker C

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All the beakers

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Solution

The correct option is B
Beaker B

Copper is less reactive than zinc and iron, but is more reactive than silver and hence displaces silver from its salt solution.

Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag

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Beakers A, B, and C contain zinc sulphate, silver nitrate, and ferrous sulphate solutions respectively. Copper pieces are added to each beaker. The blue colour will appear in case of:

The correct option is B Beaker B Copper is less reactive than zinc and iron, but is more reactive than silver and hence displaces silver from its salt solution. Cu + 2AgNO3 → Cu(NO3)2 + 2Ag

Beakers A, B, and C contain zinc sulphate, silver nitrate, and ferrous sulphate solutions respectively.

Copper pieces are added to each beaker. The blue colour will appear in case of:

The correct option is B
Beaker B

Copper is less reactive than zinc and iron, but is more reactive than silver and hence displaces silver from its salt solution.

Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag