Question

A current of $9.95$ amperes flowing for $10$ minutes, deposits $3gm$ of a metal. Equivalent weight of the metal is

• A. 12.5
• B. 18.5
• C. 21.5
• D. 48.5

Answer 1

Answer: (D)

Charge = Current $\times$ time

$=9.95\times 10\times 60$

$5970C$

$\therefore 5970C$ deposites $3g$ of metal

$\Rightarrow 96500C$ will deposite $=\frac{3}{5970}\times 96500g$ metal

$=48.49g$ metal

Therefore equivalent weight is $48.49g$