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प्रश्न
Higher Order Thinking Skill (HOT)
What are the objectives for replacing non-conventional energy resources from conventional energy resources?
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उत्तर
Non conventional energy resources are non-polluting renewable sources which are environmentally clean. It is available in unlimited amount in nature and they can be renewed over a short period of time inexpensive and can be harvested continuously.
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संबंधित प्रश्न
Name two sources of energy which you consider to be non-renewable. Give reason for your choice.
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?
Name any four fractions obtained from petroleum which are used as fuels.
Why is LPG considered a better fuel than coal?
The energy in petrol originally came from the sun. Explain how it got into petrol.
What type of nuclear reaction is responsible for the liberation of energy:
in the sun?
State whether the following is True or False.
The Sardar Sarovar Dam is built on the river Narmada.
Can you tell?
What are the non-conventional energy resources?
Some natural resources are given below. Classify them into the exhaustible and inexhaustible natural resources.
| air, coal, natural gas, sunlight, petroleum, minerals, forests, oxygen |
Fill in the blanks and complete the story.
About 300 million years ago, the earth had dense ______ in low lying wetland areas. Due to natural processes like ______, these forests got buried under the ______. As more ______ deposited over them, they were compressed. The ______ also rose as they sank deeper and deeper. Under high ______ and high ______, dead plants got slowly converted into coal.
