Question 2:
Which of the following is not an example of a bio-mass energy source?
(a) wood (b) gobar gas
(c) nuclear energy (d) coal
Answer:
(c) Bio-mass is a source of energy that is obtained from plant materials and
animal wastes. Nuclear energy is released during nuclear fission and fusion.
In nuclear fission, uranium atom is bombarded with low-energy neutrons.
Hence, uranium atom splits into two relatively lighter nuclei. This reaction
produces huge amount of energy. In nuclear fusion reaction, lighter nuclei
are fused together to form a relatively heavier nuclei. This reaction produces
tremendous amount of energy. Hence, nuclear energy is not an example of
bio-mass energy source. Wood is a plant material, gobar gas is formed from
animal dung, and coal is a fossil fuel obtained from the buried remains of
plants and animals. Hence, these are bio-mass products.
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