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Electrolysis - Chemistry Previous Year Asked Questions with Answers (Urdu) - ObjectiveMCQ

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Electrolysis in Chemistry : PYQs with Answers

1 questions · Page 1 of 1

SSC CGL 2020 Electrochemistry

1.

During electrolysis of water, which gas is produced at the cathode?

A

Oxygen

B

Chlorine

C

Hydrogen

D

Nitrogen

View Answer

Correct Answer: C — Hydrogen

Explanation:

At the cathode (negative electrode), reduction occurs: $2H^+ + 2e^- \rightarrow H_2$ . So hydrogen is produced.