Statement A: When acidified zinc sulphate solution is electrolysed between zinc electrodes, it is zinc that is deposited at the cathode and no H2 gas is evolved.Statement B: The electrode potential of zinc is more negative than that of hydrogen as the over voltage for the H2 evolution on zinc is quite large.
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a
Both Statement A and Statement B are true
b
Both Statement A and Statement B are false
c
Statement A is true but Statement B is false.
d
Statement A is false but Statement B is true.
answer is D.
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Detailed Solution
Statement A is false and statement B is wrong.Zinc is having lower standard reduction potential than hydrogen,so at anode oxidation of zinc takes place and evolution of hydrogen gas takes place at cathode