EASY
Earn 100

The main constituent of CNG is_______.

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Important Questions on Energy: Forms and Sources

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Explain the process of fossil formation. By which method can the age of a fossil be determined?

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Explain why we are looking at the alternative sources of energy.
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 What is fossil? Write the name of two vestigial organs found in the human body.
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Which one of the following is not a conventional source of energy?
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What are fossils? What do they tell us about the process of evolution?
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Define fossils.
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What is fossils?

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What type of energy is found in wind?
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What are fossils?
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Explain the two methods to estimate the age of fossils.
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You must have come across the three 'R's to save the environment: Reduce, Recycle and Reuse. Explain Reduce in detail.
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Can any sources of energy be pollution free? Why and why not? State two limitations of the energy that can be obtained from the Oceans.
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Which of the following is not an example of a biomass energy source?
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Name one source of energy.
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What are the disadvantages of fossil fuel? Explain in brief.
HARD
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What is a dam? Why do we seek to build large dams? While building large dams, which three main problems should particularly be addressed to maintain peace among local people? Mention them.
EASY
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By what name is biogas popularly known in India?
MEDIUM
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The fossil dating technique is used to find which among the following?
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Match the suitable renewable and non-renewable resources.

Sources    A  B      C
Renewable Coal Wind  Petroleum
Non-renewable Hydrogen Natural gas Solar energy
EASY
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Why are we looking at alternative sources of energy?  Name a non-conventional source of energy and its two advantages.