When an electric current is passed through acidified water, 112 mL of hydrogen gas at N.T.P. was collected at the cathode in 965 seconds. The current passed, in ampere, is :

Options

A. 1
B. 0.5
C. 0.1
D. 2

Answer

2

Explanation

`H_(2)O+e^(-)rarr(1)/(2)H_(2)+OH^(-)`
mole of `H_(2)=(112)/(22400)=5xx10^(-3)`
mole of `H_(2)=(E)/(F)It`
`I=0.5`