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प्रश्न
Look at the figure where petroleum and natural gas deposits are shown. Why do we find oil layer above water layer?
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उत्तर
Oil is lighter than water, hence floats over it.
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संबंधित प्रश्न
What is meant by a renewable source of energy? Give two examples of renewable sources of energy.
Which of the following is not a renewable source of energy?
(a) wind
(b) flowing water
(c) fossil fuels
(d) fuel wood
Name any one hydrocarbon fraction obtained during the fractional distillation of petroleum which is used as a domestic fuel.
LPG consists mainly of:
(a) butane
(b) ethane
(c) butanone
(d) methane
Coal cannot be converted into one of the following forms of energy. This is:
(a) coal gas
(b) electricity
(c) oil
(d) charcoal
Name the constituents of biogas.
Compare and contrast biomass and hydroelectricity as sources of energy.
The fuel which is not obtained from biomass is:
(a) firewood
(b) cow-dung cakes
(c) coke
(d) charcoal
Which of the following is a pair of exhaustible natural resources?
Write True/False against the following statement.
Oxygen in air is an exhaustible natural resource.
