CGPET 2018 Solved Paper

Copper (Cu) show (+)2 charge in its stable ionic-state and has molecular mass =63.5
Also, 1 Faraday (F)= charge of one mole of electron.
Therefore, on passing 2F electricity we get one mole of copper (Cu) means 63.5g of copper.
Hence, option (c) is the correct answer.