Consider the following statements regarding a motor car battery:

1. The voltage is usually 12 V.

2. Electrolyte used is hydrochloric acid.

3. Electrodes are lead and copper.

4. Capacity is expressed in ampere-hour.

Which of the above statements are correct?

 (a) 1 and 2 (b) 2 and 3 (c) 3 and 4 (d) 1 and 4

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1 Answers

(d) In case of motor car battery or automotive batteries a nominal 12-volt potential difference is provided by connecting six galvanic cells in series. Capacity of these batteries is expressed in amperehour. Electrolyte used is a solution of about 35% sulphuric acid and 65% water and electrodes used are plates of lead and separate plates of lead dioxide.

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