Commercial cells (dry cell, lead storage, Ni-Cd, mercury, lithium-ion)

8 questions on Commercial cells (dry cell, lead storage, Ni-Cd, mercury, lithium-ion) from the Electrochemistry chapter: 2 NEET level, 3 JEE Main, 3 JEE Advanced. Each one opens with its answer and solution.

• Which of the following is a secondary (rechargeable) cell? NEET level
• In a lead storage battery, which of the following happens during discharge? NEET level
• Which statement about the Leclanche dry cell is incorrect? JEE Main level
• For a lead storage battery, which of the following statements are correct? JEE Main level
• The overall reaction of a nickel-cadmium cell during discharge is Cd + 2Ni(OH)3 -> CdO + 2Ni(OH)2 + H2O. Which statement is correct? JEE Main level
• A lead storage cell contains 500 mL of 5.00 M H2SO4. The cell delivers a steady current of 3.00 A for 9650 s. Neglecting any change in volume, find the molarity... JEE Advanced level
• In a lithium-ion cell the anode on discharge is lithiated graphite, LiC6, which releases Li+ and one electron per formula unit: LiC6 -> 6C + Li+ + e-. The theor... JEE Advanced level
• A mercury button cell works by Zn(Hg) + HgO -> ZnO + Hg with zinc in excess. The cell contains 2.17 g of HgO. Find the theoretical capacity of the cell in mAh (... JEE Advanced level