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One faraday of electricicy is passed through aqueous solution of sodium chloride. It producesA. one mole of oxygen at anodeB. 1 gm of hydrogen at cathodeC. neither hydrogen nor oxygen is producedD. sodium is deposited at cathode in equivalent proportion.

Answer» Correct Answer - B
`NaCl + aq to Na^(+) (aq) + Cl^(-) (aq)`
`H_(2)O to H^(+) + OH^(-)`
At cathode : `H^(+) + e^(-) to (1)/(2) H_(2)`
1 F liberates 1 g eq.of `H_(2)` gas , i.e., 1 g of `H_(2)` at cathode .


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