Q. 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 powerinbr> 3. Fuel cells produce electricity in the form of Alternating Current (AC).
Which of the statements given above is / are correct?