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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
Define ignition temperature of a fuel.
Classify the following
Coal, Wind, Tides, Petroleum,Wood, Natural gas
What is the basis of above classification?
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?
What are the various fuels which are used to generate electricity in a thermal power plant?
What are the disadvantages of burning fossil fuels?
Which fossil fuels were formed by the buried remains of small plants and animals?
The natural gas consists mainly of:
(a) methane
(b) ethane
(c) propane
(d) butane
Name the constituents of biogas.
Name the biomass which is still widely used as a source of heat energy in many household of our country.
What are the two ways in which cow-dung can be used as a fuel? Which of them is better and why?
What are fossil fuels?
Name a few major producers of petroleum in the world.
Describe the four major types of coal.
Can you tell?
Why should we save energy?
Can you tell?
Why should we maximise the use of non-conventional energy resources?
Why should we conserve the non-renewable sources of energy?
Name two forms of sea energy.
Why is there a need for harnessing non-conventional sources of energy? How can energy be harnessed from the sea in different ways?
Imagine that all the exhaustible natural resources are exhausted by human activities. Do you think survival of living beings would be possible? If yes, why? If not, why not?
