Question

In electrolysis, mass of the substance liberated at cathode is proportional to

• A. strength of the current passed.
• B. time of passage of current.
• C. quantity of electricity passed.
• D. none of these

Answer 1

The correct option is C quantity of electricity passed.

According to the first law of electrolysis the mass of of substance liberated at cathode is proportional to the quantity of electric charge passed through it or indirectly it's proportional to the quantity of electricity passed.

$\because$ $m=k\times q$