Current efficiency and series/parallel electrolytic cells

8 questions on Current efficiency and series/parallel electrolytic cells from the Electrochemistry chapter: 1 NEET level, 4 JEE Main, 3 JEE Advanced. Each one opens with its answer and solution.

• Two electrolytic cells, one containing AgNO3 and the other CuSO4, are connected in series to a battery. Which statement is correct? NEET level
• A current of 2.00 A is passed through aqueous ZnSO4 for 1930 s and 1.14 g of zinc is deposited at the cathode. Find the current efficiency in percent (nearest i... JEE Main level
• Two electrolytic cells, A containing aqueous AgNO3 and B containing aqueous CuSO4, are connected in parallel across a battery. The total current is 3.25 A and i... JEE Main level
• Aqueous NiSO4 and aqueous CrCl3 are electrolysed in two cells connected in series. When 5.87 g of nickel is deposited in the first cell, the mass of chromium de... JEE Main level
• Two cells are connected in series. Cell 1 contains aqueous AgNO3 and works at 100% current efficiency; cell 2 contains aqueous CuSO4 and its cathode works at 80... JEE Advanced level
• In a chlor-alkali cell, chlorine is produced at the anode by 2Cl- -> Cl2 + 2e-. The cell operates at 3.40 V with a current efficiency of 92% for chlorine. The e... JEE Advanced level
• Three electrolytic cells containing aqueous AgNO3, aqueous CuSO4 and dilute H2SO4, all with platinum electrodes, are connected in series and 0.0500 F of charge ... JEE Advanced level
• A copper plating cell is connected in series with a silver coulometer. During a run, 3.24 g of silver is deposited in the coulometer and 0.762 g of copper is de... JEE Main level