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प्रश्न
Fill in the blank
_______is the coal with the highest percentage of coal.
उत्तर
Anthracite is coal with the highest percentage of coal.
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संबंधित प्रश्न
Why are we looking at alternate sources of energy?
Classify the following
Coal, Wind, Tides, Petroleum,Wood, Natural gas
What is the basis of above classification?
Name any four fractions obtained from petroleum which are used as fuels.
What are the disadvantages of burning fossil fuels?
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?
Name the constituents of biogas.
Fill in the following blank with suitable word:
Biomass is another form in which ........... energy manifests itself.
What is biomass? Give three examples of biomass.
Name the biomass which is still widely used as a source of heat energy in many household of our country.
One of the following is not required in the formation of biogas in a biogas plant. This is:
(a) cow-dung
(b) water
(c) oxygen
(d) anaerobic bacteria
What type of nuclear reaction is responsible for the liberation of energy:
in a nuclear reactor?
Which produced of the nuclear fission of uranium-235 is utilised to cause further fission of its nuclei?
The source of energy of the sun is:
(a) conversion of hydrogen gas into helium
(b) conversion of carbon fuel into carbon dioxide
(c) burning of hydrogen gas present in the sun
(d) disintegration of uranium into barium and krypton
State whether the following is True or False.
Coal and petroleum are renewable energy resources.
Name a few major producers of petroleum in the world.
Why should we conserve the non-renewable sources of energy?
Why is there a need to harness non-conventional sources of energy? Give two main reasons.
Why is there a need for harnessing non-conventional sources of energy? How can energy be harnessed from the sea in different ways?
Exhaustible natural resources are
Look at figure where petroleum and natural gas deposits are shown. Why do we find oil layer above water layer?
