a
Oxygen
b
Hydrogen
c
Tetraoxosulphate(IV) acid
d
Chlorine
Explanation
Correct Option
bNo explanation available
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Discussions (7)

open2steve
7 years ago
the working of an electrchemical results in the formation of hydrogen gas at the cathode which can be corrected by using Mno2 as a depolariser converting the hydrogen formed to water, so the correct answer is B

Klassiq1
4 years ago
The hydrogen bubbles which are clinging over the surface of copper electrode anode becomes a thin film of hydrogen over the copper electrode. This hydrogen film increases the internal resistance and reduces the emf of the cell and hence the cell soon becomes inactive. This effect is known as polarization.
Option B is correct then




