In Fuel cell, chemical energy is converted into
(a) Heat energy
(b) Mechanical energy
(c) Electrical energy
(d) Sound energy
Answers
Answer: [a] A fuel cell is like a battery in that it generates electricity from an electrochemical reaction. Both batteries and fuel cells convert chemical potential energy into electrical energy and also, as a by-product of this process, into heat energy. ... A catalyst is often used to speed up the reactions at the electrodes.
[b] Hydrogen Basics - Fuel Cells. A fuel cell converts the chemical energy in hydrogen and oxygen into direct current electrical energy by electrochemical reactions. Fuel cells are devices that convert hydrogen gas directly into low-voltage, direct current electricity. The cell has no moving parts.
[c] Hydrogen Basics - Fuel Cells. A fuel cell converts the chemical energy in hydrogen and oxygen into direct current electrical energy by electrochemical reactions. Fuel cells are devices that convert hydrogen gas directly into low-voltage, direct current electricity. The cell has no moving parts.
[d] When we move a vehicle, the engine converts the chemical energy stored in the fuel into heat, sound and kinetic energy. Note that the heat and the sound that are produced are not desirable.
Answer:
option (c) is correct.
Explanation:
A fuel cell uses the chemical energy of hydrogen or other fuels to produce electricity cleanly and efficiently. When hydrogen is the fuel, the only products are electricity, water and heat. Fuel cells are unique in their diversity of potential applications; they can use a wide range of fuels and feedstocks and can power systems as large as a utility power plant and as small as a laptop computer.
Fuel cells have many advantages over the traditional combustion-based technologies currently used in many power plants and vehicles. Fuel cells can operate more efficiently than internal combustion engines, and can convert the chemical energy in the fuel directly into electrical energy with an efficiency in excess of 60%. Fuel cell emissions are lower or zero compared to internal combustion engines.
Hence, option (c) is correct.
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