RRB Group D 19 Sep 2022 Shift 3 Solved Paper

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Question : 61 of 100

Marks: +1, -0

Which of the following gases are evolved at the anode and the cathode, respectively, during electrolytic decomposition of aqueous sodium chloride?

H2 gas at the anode and O₂ gas at the cathode.
O₂ gas at the anode and H₂ gas at the cathode.
Cl₂ gas at the anode and H₂ gas at the cathode.
H₂ gas at the anode and Cl₂ gas at the cathode.

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