With reference to ‘fuel cells’ in which hydrogen-rich fuel and oxygen

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?

[amp_mcq option1=”1 only” option2=”2 and 3 only” option3=”1 and 3 only” option4=”1, 2 and 3″ correct=”option1″]