Faraday's Second Law

Q. The weight of silver (at.wt. = 108) displaced by a quantity of electricity which displaces 5600 mL of $O_2$ at STP will be

1. 10.8 g
2. 54.0 g
3. 108.0 g
4. 5.4 g

Q. Assuming no change in volume, the time required to obtain solution of $pH=12$ by electrolysis of $50ml.0.1MNaCl$ (using current of 0.5 amp) will be

1. 65 sec
2. 96.5 sec
3. 965 sec
4. 9.65 sec

Q. Three ampere current was passed through an aqueous solution of an unknown salt of metal M for 1 hour. 2.997 gm of $M^{n+}$ was deposited at cathode. The value of n is (Atomic weight of M = 106.4)

1. 2
2. 1
3. 4
4. 3

Q. What weight of a metal of equivalent weight 12 will give 0.475 g of its chloride?

1. 0.12 g
2. 0.24 g
3. 0.48 g
4. 0.36 g