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प्रश्न
Select the renewable and non-renewable sources of energy from the following :
- Coal
- Wood
- Water
- Diesel
- Wind
- Oil
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उत्तर
Renewable : Wood, Water and Wind
Non-renewable : Coal, Diesel and Oil
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संबंधित प्रश्न
The fuel having the lowest calorific value is:
(a) coal
(b) wood
(c) charcoal
(d) kerosene
The main constituent of petroleum gas is:
(a) methane
(b) ethane
(c) butane
(d) propane
Which of the following is needed for the formation of biogas from cow-dung and which not?
Water, Oxygen
Which of the following sources of energy are not derived from the sun?
Biomass, Wind, Ocean thermal energy, Geothermal energy, Nuclear fuels, Hydroelectricity, Wave energy, Coal, Petroleum, Tidal energy
You have three unlabelled test tubes containing ethanol, ethanoic acid and soap solution. Explain the method you would use to identify the compounds in different test tubes by chemical tests using litmus paper and sodium metal.
Why is the use of wood as a fuel not advisable although wood is a renewable source of energy?
Why is there a need for harnessing non-conventional sources of energy? How can energy be harnessed from the sea in different ways?
The underlined word in the following sentence have been jumbled up. Write them in their correct form.
Nutsgilh is an example of inexhaustible natural resources.
Write True/False against the following statement.
Oxygen in air is an exhaustible natural resource.
Write True/False against the following statement.
Resources which are present in unlimited quantity in nature are called exhaustible natural resources.
