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प्रश्न
Fill in the blank
_______is the coal with the highest percentage of coal.
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उत्तर
Anthracite is coal with the highest percentage of coal.
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संबंधित प्रश्न
Which fossil fuel formed by the buried remains of large land plants?
The main constituent of petroleum gas is:
(a) methane
(b) ethane
(c) butane
(d) propane
The product of petroleum used to drive heavy vehicles like trucks is:
(a) petrol
(b) kerosene
(c) diesel
(d) carbon oxide
The aviation fuel which is used in the engines of jet aeroplanes is:
(a) diesel
(b) kerosene
(c) petrol
(d) CNG
The ultimate source of energy stored in fossil fuels is:
(a) moon
(b) earth
(c) sun
(d) sea
A substance X is added to LPG cylinders while filling so as to make the detection of leakage of LPG from the cylinder easy.
How does substance X make the detection of leakage of LPG easy?
What should be the minimum wind speed for the satisfactory working of a wind-powered electric generator?
State whether the following statement is true or false:
Tidal energy is one of the forms in which solar energy manifests itself in oceans.
Fill in the following blank with suitable word:
Tidal waves build up and recede ........... a day.
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
The non-renewable source of energy among the following is:
(a) hydroelectricity
(b) sewage gas
(c) natural gas
(d) gobar gas
What type of nuclear reaction is responsible for the liberation of energy:
in a nuclear reactor?
What are non-renewable resources of energy? Give two examples of such resources.
Choose the correct answer.
Windmills have been used for many centuries in
Name a few major producers of petroleum in the world.
The major problem in harnessing nuclear energy is how to ______.
Which of the following is a pair of exhaustible natural resources?
Exhaustible natural resources are
Coal is one of the ______ used to cook food.
