Electrolysis and Storage of Batteries Objective Questions - ObjectiveBooks

Electrolysis and Storage of Batteries Objective Questions

Practice Test: Question Set - 12


1. The active materials of a nickel-iron battery are
    (A) Nickel hydroxide
    (B) Powdered iron and its oxide
    (C) 21% solution of KOH
    (D) All of the above

2. When the lead-acid cell is fully charged, the electrolyte assumes ________ appearance
    (A) Dull
    (B) Reddish
    (C) Bright
    (D) Milky

3. Lead-acid cell has a life of nearly charges and discharges
    (A) 500
    (B) 700
    (C) 1000
    (D) 1250

4. Internal short circuits are caused by
    (A) Breakdown of one or more separators
    (B) Excess accumulation of sediment at the bottom of the cell
    (C) Both (A) and (B)
    (D) None of the above

5. The substances which combine together to store electrical energy during the charge are called _________ materials
    (A) Active
    (B) Passive
    (C) Inert
    (D) Dielectric

6. Battery container should be acid resistance; therefore it is made up of
    (A) Glass
    (B) Plastic
    (C) Wood
    (D) All above

7. ________ of electrolyte indicates the state of charge of the battery
    (A) Color
    (B) Mass
    (C) Viscosity
    (D) Specific gravity

8. In alkaline cell the electrolyte is
    (A) Dilute sulphuric acid
    (B) Concentrated sulphuric acid
    (C) NaOH
    (D) KOH

9. A battery of 6 cells will show a drop of _________ volts from fully charged state to fully discharged state.
    (A) 1.0
    (B) 1.5
    (C) 2.4
    (D) 2.9

10. A typical output of a solar cell is
    (A) 0.1 V
    (B) 0.26 V
    (C) 1.1 V
    (D) 2 V

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