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Q. On electrolysis, which of the following arrangements will lead to oxygen being evolved at the anode?

Electrochemistry

Solution:

Correct answer is (b) Fused $NaOH$ with an iron cathode and a nickel anodeCorrect answer is (c) Aqueous $AgNO _3$ solution with platinum electrodesCorrect answer is (d) Dilute $H _2 SO _4$ with platinum electrodes