| With reference to 'fuel cells' in which hydrogen-rich fuel and oxygen are used to generate electricity, consider the following statements. |
| 1. If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by products. |
| 2. Fuel cells can be used for powering buildings and not for small devices like laptop computers. |
| 3. Fuel cells produce electricity in the form of Alternating Current (AC). |
| Which of the statements) given above is/are correct? |
A) Only 1
B) 2 and 3
C) 1 and 3
D) All of these
Correct Answer: A
Solution :
Exp. [a] We know that Alternating Current is produced with the help of magnetic fields, so fuel cells cannot produce that. This eliminates all the options except , which has to be the answer. If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by products. Fuel cells can be used for powering small devices like laptop computers. Hence, option [a] is correct.
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