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A compound which liberates reddish brown...

A compound which liberates reddish brown gas around the anode during electrolysis in its molten state is
(a) Sodium chloride
(b) Copper (II) oxide
(c) Lead (II) bromide
(d) Copper (II) sulphate

A

Sodium chloride

B

Copper [II] oxide,

C

Copper [II] sulphate

D

Lead [II] bromide

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