Question

Which of the following statements regarding fuel cell is incorrect?

Options

• These cells are eco-friendly.

• These cells convert the energy of combustion of fuels like H₂, CH₄, CH₃OH, etc., directly into electrical energy.

• H₂ – O₂ fuel cell is used in the Apollo space programme.

• Fuel cells produce electricity with an efficiency of about 100%.

Answer 1

Fuel cells produce electricity with an efficiency of about 100%.

Explanation:

Compared to thermal plants, which have an efficiency of about 40%, fuel cells produce energy with a capacity of roughly 70%.