Question
A metal surface of $100 \mathrm{~cm}^{2}$ area has to be coated with nickel layer of thickness $0.001 \mathrm{~mm}$. A current of $2 \mathrm{~A}$ was passed through a solution of $\mathrm{Ni}\left(\mathrm{NO}_{3}\right)_{2}$ for '$\mathrm{x}$' seconds to coat the desired layer. The value of $\mathrm{x}$ is __________. (Nearest integer) ( $\rho_{\mathrm{Ni}}$ (density of Nickel) is $10 \mathrm{~g} \mathrm{~mL}$, Molar mass of Nickel is $60 \mathrm{~g} \mathrm{~mol}^{-1}$ $\left.\mathrm{F}=96500 ~\mathrm{C} ~\mathrm{mol}^{-1}\right)$
Correct Answer
161