gs1medium

With reference to ‘fuel cells’ in which hydrogen-rich fuel and oxygen are used to generate electricity. Consider the following statements:

  1. 1.If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by-products.
  2. 2.Fuel cells can be used for powering buildings and not for small devices like laptop computers.
  3. 3.Fuel cells produce electricity in the form of Alternating Current (AC).

Which of the statements given above is/are correct?

  1. A.1 only
  2. B.2 and 3 only
  3. C.1 and 3 only
  4. D.1, 2 and 3
▶ Answer & Explanation

Correct answer: A. 1 only

Fuel cells that utilize pure hydrogen and oxygen as reactants produce electricity through an electrochemical process, with water and heat being the primary by-products. This clean energy generation makes them suitable for a wide range of applications, from portable electronics to large-scale power generation for buildings. The electricity generated by most fuel cells is Direct Current (DC), which may then be converted to AC if needed.

Source: UPSC gs1 2015

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