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प्रश्न
Fill in the blank
__________ are examples of renewable energy resources.
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उत्तर
Sun, water, wind are examples of renewable energy resources.
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संबंधित प्रश्न
"The ignition temperature of a fuel is 80°C". What does this mean?
Name two sources of energy that you think are renewable. Give reason for your choice.
Name two sources of energy which you consider to be non-renewable. Give reason for your choice.
Most of the fuels contain carbon as one of the constituents. Name a fuel which has very high calorific value but not contain carbon.
Name the component which is found in natural gas well as in biogas.
Why is LPG considered a good fuel?
Describe how fossil fuels were formed.
Which fossil fuel formed by the buried remains of large land plants?
A substance X is added to LPG cylinders while filling so as to make the detection of leakage of LPG from the cylinder easy.
Name the substance X.
The pollution of air caused by burning petroleum fuels (like petrol and diesel) in vehicles can be controlled by fitting a device X in the exhaust system of vehicles.
Name the device
Compare the sun and the fossil fuels as the sources of energy.
Name the major component of biogas.
Choose the correct answer.
Windmills have been used for many centuries in
State whether the following is True or False.
China, the USA, and Spain are major producers of wind energy.
What is the main difference between renewable and non-renewable energy resources?
Can you tell?
Why should we save energy?
In a hydro power plant ______.
What are the environmental consequences of using fossil fuels? Suggest the steps to minimise the pollution caused by various sources of energy including non-conventional sources of energy.
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)
