Electrolysis and Storage Batteries MCQs
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It is not desirable to leave a lead storage battery in a discharged state for a long time mainly because
- A. electrolyte will attack the container
- B. plates will become sulphated
- C. electrolyte will become weak
- D. acid will evaporate
- Correct Answer: Option B
The internal resistance of a discharged battery compared with a charged one
- A. is more
- B. is less
- C. remains the same
- D. is negative
- Correct Answer: Option C
To keep the terminals of a lead acid storage battery free from corrosion, it is advisable to
- A. clean the terminals frequently
- B. charge for the battery at frequent intervals
- C. keep the electrolyte level low
- D. apply petroleum jelly
- Correct Answer: Option D
The ampere hour capacity of battery depends on
- A. the thickness of the plates
- B. the area of the plates
- C. the strength of the electrolytes
- D. the distance between the plates
- Correct Answer: Option B
When the electrolyte of a storage battery is low it is usually proper to
- A. add a special weak acid solution
- B. top up with distilled water
- C. charge the battery for a short time before adding an electrolyte
- D. drain battery completely and fill it with fresh electrolyte
- Correct Answer: Option B
Electrolyte of a strong battery is formed by adding
- A. water to hydrochloric acid
- B. sulphuric acid to water
- C. hydrochloric acid to water
- D. water to sulphuric acid
- Correct Answer: Option B
Other types of accumulators besides the lead acid type are
- A. alkaline batteries only
- B. alkaline and solar batteries
- C. alkaline and dry batteries
- D. nickel-cadmium batteries
- Correct Answer: Option D
The lead acid accumulator should be recharged when the specific gravity of the electrolyte is about
- A. 1.15
- B. 1.80
- C. 1.25
- D. 1.35
- Correct Answer: Option A
The condition of a secondary cell can be determined by
- A. its terminal voltage
- B. the color of the electrolyte
- C. the level of the electrolyte
- D. the terminal voltage and strength of the electrolyte
- Correct Answer: Option C
Gassing occurs in the process of
- A. charging an accumulator
- B. charging a dry cell
- C. discharging an accumulator
- D. discharging a dry cell
- Correct Answer: Option A