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प्रश्न
Fill in the blank
Coal, petroleum, and natural gas are _________fuels.
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उत्तर
Coal, petroleum, and natural gas are fossil fuels.
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संबंधित प्रश्न
What are the disadvantages of fossil fuels?
Why are we looking at alternate sources of energy?
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?
State one important use of CNG these days.
Which fossil fuels were formed by the buried remains of small plants and animals?
The product of petroleum used to drive heavy vehicles like trucks is:
(a) petrol
(b) kerosene
(c) diesel
(d) carbon oxide
LPG consists mainly of:
(a) butane
(b) ethane
(c) butanone
(d) methane
Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.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.
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 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
The non-renewable source of energy among the following is:
(a) hydroelectricity
(b) sewage gas
(c) natural gas
(d) gobar gas
The fossil fuel whose known reserves in the earth are expected to last for the minimum period is:
(a) coal
(b) uranium
(c) petroleum
(d) natural gas
Who is the odd one out?
Name the major constituent of natural gas.
Acid rain happens because ______.
Coal is one of the ______ used to cook food.
Match the items given in Column I with the items of Column II.
| Column I | Column II |
| (a) Used for road surfacing | (i) Black gold |
| (b) Natural gas | (ii) Vaseline and candles |
| (c) Petroleum | (iii) Bitumen |
| (d) Paraffin wax | (iv) CNG |
