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प्रश्न
Which of the following fuels has the highest calorific value?
(a) natural gas
(b) methane gas
(c) hydrogen gas
(d) biogas
उत्तर
Hydrogen gas
Hydrogen gas has the highest calorific value (150 kJ/g).
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संबंधित प्रश्न
Name two sources of energy that you think are renewable. Give reason for your choice.
A good fuel is one which possesses:
(a) high calorific value and low ignition temperature
(b) high calorific value and high ignition temperature
(c) high calorific value and moderate ignition temperature
(d) low calorific value and moderate ignition temperature
Write the full forms of CNG and LPG.
Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.
Name the element X.
Compare the sun and the fossil fuels as the sources of energy.
Name the constituents of biogas.
Can you tell?
Which forms of energy from the sun are used in solar energy devices?
Exhaustible natural resources are
Write True/False against the following statement.
Oxygen in air is an exhaustible natural resource.
Why petrol is exhaustible natural resource whereas sunlight is not? Explain.
