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UPSC 1999 · Q112 · Science & Technology › Energy & Environment · Save

Consider the following statements regarding a motor car battery: I. The voltage is usually 12 V. II. Electrolyte used is hydrochloric acid. III. Electrodes are lead and copper. IV. Capacity is expressed in ampere-hour.

Which of the above statements are correct?

(a) I and II
(b) II and III
(c) III and IV
(d) I and IV
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Answer: (d) I and IV