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A green mass is formed in the charcoal...

A green mass is formed in the charcoal cavity test when a colourless salt `(X)` is fused with cobalt nitrate. (X) may contain

A

`Co(NO_3)_2`

B

`Ca(NO_3)_2`

C

`CuSO_4`

D

`MnSO_4`

Text Solution

Verified by Experts

The correct Answer is:
B
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