Fuel Cell MCQs
A fuel cell is an electrochemical device that converts the energy from the combustion of fuels such as hydrogen or methanol directly into electrical energy. Fuel cells need a continuous supply of fuel and oxygen to produce electricity continuously. The first fuel cell, known as the Grove Voltaic cell, was invented by William Grove. Hydrogen is the most frequently used fuel, reacting with oxygen to produce water. Fuel cells are utilized in NASA’s space programs and offer greater efficiency compared to thermal power plants, with an electricity production efficiency of 70%.
The reaction occurring at the cathode of hydrogen-oxygen fuel cell is
(a) 2H2+ 4OH–→ 4H2O + 4e–
(b) 2H2+ O2→ 2H2O (l )
(c) H++ OH–→ H2O
(d) O2+ 2H2O + 4e–→ 4OH–
Which of the following is incorrect for fuel cells?
(a) They are modular
(b) They are highly efficient
(c) The noise level is very high
(d) The emission level is much below the permissible level
Which of the following is not a fuel cell?
(a) Hexanone-oxygen cell
(b) Methyl-oxygen-alcohol cell
(c) Hydrogen-oxygen cell
(d) Propane-oxygen cell
Which of the following converts energy from the combustion of fuel directly to electrical energy?
(a) Ni-Cd cell
(b) Dynamo
(c) Fuel cell
(d) Electrolytic cell
Fuel cell was invented in the year
(a) 1838
(b) 1874
(c) 1903
(d) 1958
The standard emf is __ for hydrogen-oxygen fuel cells.
(a) 3.96 V
(b) 1.23 V
(c) 0.58 V
(d) 2.54 V
Who invented the fuel cell?
(a) Mathew Maury
(b) Gideon Sundback
(c) Robert Bunsen
(d) William Grove
Which of the following is continuously replaced in a fuel cell?
(a) Oxidiser
(b) Fuel
(c) Both fuel and oxidiser
(d) None of the above
Chemical energy is converted to __ energy by a fuel cell.
(a) solar
(b) electrical
(c) potential
(d) mechanical
Which of the following does not affect the reactions in a fuel cell?
(a) Electrolyte composition
(b) Electrode composition
(c) A combination of fuel and oxidiser
(d) Catalytic effect of the reaction container
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