Multiple Choice Questions Electrolysis and Storage of Batteries - Set 09 - ObjectiveBooks

Multiple Choice Questions Electrolysis and Storage of Batteries - Set 09

Practice Test: Question Set - 09


1. In a lead-acid battery the energy is stored in the form of
    (A) Charged ions
    (B) Chemical energy
    (C) Electrostatic energy
    (D) Electromagnetic energy

2. During charging the specific gravity of the electrolyte of a lead-acid battery
    (A) Increases
    (B) Decreases
    (C) Remains the same
    (D) Becomes zero

3. During the charging and discharging of a nickel-iron cell
    (A) Corrosive fumes are produced
    (B) Water is neither formed nor absorbed
    (C) Nickel hydroxide remains unsplit
    (D) Its e.m.f. remains constant

4. The e.m.f. of an Edison cell, when fully charged, is nearly
    (A) 1.4 V
    (B) 1 V
    (C) 0.9 V
    (D) 0.8 V

5. Over charging
    (A) Produces excessive gassing
    (B) Loosens the active material
    (C) Increases the temperature resulting in buckling of plates
    (D) All above

6. In constant-current charging method, the supply voltage from discharged to fully charged condition
    (A) Decreases
    (B) Increases
    (C) Remains constant
    (D) None of the above

7. Life of the batteries is in the following ascending order.
    (A) Lead-acid cell, Edison cell, Nickel cadmium cell
    (B) Lead-acid cell, Nickel-cadmium cell, Edison cell
    (C) Edison cell, Nickel-cadmium cell, lead-acid cell
    (D) Nickel-cadmium cell, Edison cell, lead-acid cell

8. Capacity of a battery is expressed in
    (A) Ah
    (B) Vh
    (C) Wh
    (D) kWh

9. Charging a sulphated battery at high rate results in
    (A) Boiling of electrolyte due to gassing
    (B) Warping of plates
    (C) Damage to separators, cell caps covers and battery case due to excessive temperature
    (D) All above

10. Which of the following cell has a. reversible chemical reaction?
    (A) Lead-acid
    (B) Mercury oxide
    (C) Carbon-zinc
    (D) Silver-oxide

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