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प्रश्न
What are fossil fuels?
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उत्तर
Fuels formed in the geological past from the remains of living organisms and plants etc. Examples of fossil fuels are coal, petroleum, and natural gas, etc.
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संबंधित प्रश्न
On what basis would you classify energy sources as
(a) renewable and non-renewable?
(b) exhaustible and inexhaustible?
Are the options given in (a) and (b) the same?
What is meant by a renewable source of energy? Give two examples of renewable sources of energy.
Classify the following into renewable and non-renewable sources of energy:
Coal, Wind, Tides, Petroleum,Wood, Natural gas
Coal is said to be formed from the wood of trees. Why then is coal considered to be a non-renewable source of energy whereas wood is a renewable source of energy?
Which gaseous fuel is being used increasingly in transport vehicles like cars and buses these days?
Explain why, natural gas is considered to be a good fuel.
Which of the following is not produced by the burning of fossil fuels?
(a) nitrogen oxides
(b) sulphur oxides
(c) sodium oxides
(d) carbon oxides
Which of the following is not a fossil source of energy?
(a) kerosene oil
(b) cow-dung cakes
(c) CNG
(d) coal
LPG consists mainly of:
(a) butane
(b) ethane
(c) butanone
(d) methane
The pollution of air caused by burning petroleum fuels (like petrol and diesel) in vehicles can be controlled by fitting a device X in the exhaust system of vehicles.
How does this device help in controlling air pollution?
Most of the sources of energy that we sue represent stored solar energy. Which of the following is not ultimately derived from the sun's energy?
(a) wind energy
(b) geothermal energy
(c) fossil fuels
(d) biomass
Which of the following is ultimately not derived from the sun's energy (or solar energy)?
(a) wind energy
(b) nuclear energy
(c) biomass energy
(d) ocean thermal energy
What is meant by the renewable and non-renewable sources of energy? State two differences between them, giving two examples of each
Fill in the blank
__________ are examples of renewable energy resources.
What is the main difference between renewable and non-renewable energy resources?
Why should we conserve the non-renewable sources of energy?
Which of the following is a non-renewable source of energy?
Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilisation?
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.
