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Electrolysis and Storage of Batteries - Interview Questions and Answers

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1. When a lead-acid battery is in fully charged condition, the colour of its positive plate is
A. dark grey
B. brown
C. dark brown
D. none of above
Explanation:
2. It is noticed that during discharging the following does not happen
A. both anode and cathode become PbS04
B. specific gravity of H2SO4 decreases
C. voltage of the cell decreases
D. the cell absorbs energy
Explanation:
3. Which of the following has lower sp. gravity V
A. Dilute H2S04
B. Concentrated H2SO4
C. Water
D. Any of the above
Explanation:
4. Satellite power requirement is provided through
A. solar cells
B. dry cells
C. nickel-cadmium cells
D. lead-acid batteries
Explanation:
5. Petroleum jelly is applied to the electrical connections to the lead-acid battery
A. prevent local heating
B. prevent short-circuiting
C. reduce path resistance
D. prevent corrosion
Explanation:
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