Question

A factory produces 40 kg of calcium in two hours by electrolysis. How much aluminium can be produced by same current in 2 hours if current efficiency is 50%?
A. 22 kg
B. 18 kg
C. 9 kg
D. 27 kg

Answer 1

Correct Answer - B
`("Wt. of Ca")/("Wt. of Al") = ("Eq. mass of Ca")/("Eq. mass of Al") , (40)/("Wt. of Al") = (40//2)/(27//3)` or Wt. of Al = 18 kg .