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For Competitive Exams

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?

1 and 2
2 and 3
3 and 4
1 and 4
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