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प्रश्न
Complete the crossword in figure with the help of the clues:
Across
1. Fuels obtained from dead remains of living organisms. (6, 5)
2. A process by which the various constituents of petroleum are separated. (8)
3. A porous black substance obtained from coal. (4)
4. Another name for motor fuel. (6)
Down
5. The substance obtained by carbonisation. (4)
6. Fuel for heavy motor vehicles. (6)
7. A petroleum product used for road surfacing. (7)
8. Dead remains of sea animals got converted into it. (9)
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उत्तर
Across
1. Fossil fuels
2. Refining
3. Coke
4. Petrol
Down
5. Coal
6. Diesel
7. Bitumen
8. Petroleum
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संबंधित प्रश्न
Name two energy sources that you would consider to be renewable. Give reasons for your choices.
Classify the following
Coal, Wind, Tides, Petroleum,Wood, Natural gas
What is the basis of above classification?
Name any one hydrocarbon fraction obtained during the fractional distillation of petroleum which is used as a domestic fuel.
Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.
Name another element which is usually found in combination with X in fossil fuels.
What is the function of anaerobic micro-organisms such as anaerobic bacteria in a biogas plant?
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__________ are examples of renewable energy resources.
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Solar cells use the power supplied by the ______.
Name a few major producers of petroleum in the world.
What do you know about wind energy?
Write a short note on nuclear power.
