Q.

Dilute nitric acid on electrolysis using platinum electrodes yields.

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a

Both oxygen & hydrogen at cathode

b

Oxygen at cathode and H2 at anode

c

H2 at cathode and O2 at anode

d

Both oxygen & hydrogen at anode

answer is C.

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Detailed Solution

Cathode reaction : 

2H2O+4e-H2+2OH-

Anode reaction :

2H2O-4e-O2+4H+

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