CBSE 2025, Set 3

Question

Match the type of cell given in Column I with their use given in Column II.

| Column I | Column II |
|---|---|
| i. Lead storage cell | a. Wall clock |
| ii. Mercury cell | b. Apollo Space Programme |
| iii. Dry cell | c. Wrist watch |
| iv. Fuel cell | d. Inverter | A). i-a, ii-b, iii-c, iv-d B). i-d, ii-c, iii-a, iv-b C). i-c, ii-d, iii-b, iv-a D). i-b, ii-a, iii-d, iv-c

Edvaya · Accepted Answer

The correct answer is i-d, ii-c, iii-a, iv-b. - **Lead storage cell → Inverter (d):** High capacity rechargeable battery used for inverters and car batteries. Delivers high current. - **Mercury cell → Wrist watch (c):** Compact, constant voltage (1.35 V), long shelf life — ideal for small devices like wrist watches, hearing aids. - **Dry cell → Wall clock (a):** Common Leclanché cell (zinc-carbon), inexpensive, powers wall clocks. - **Fuel cell → Apollo Space Programme (b):** H$_2$–O$_2$ fuel cells were used in Apollo missions to generate electricity and produce drinking water. **Answer: i-d, ii-c, iii-a, iv-b**

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Column I	Column II
i. Lead storage cell	a. Wall clock
ii. Mercury cell	b. Apollo Space Programme
iii. Dry cell	c. Wrist watch
iv. Fuel cell	d. Inverter