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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
What is meant by a non-renewable source of energy? Give two examples of non-renewable source of energy.
Name two sources of energy that you think are renewable. Give reason for your choice.
Classify the following into renewable and non-renewable sources of energy:
Coal, Wind, Tides, Petroleum,Wood, Natural gas
A non-renewable source of energy is:
(a) wood
(b) alcohol
(c) hydrogen gas
(d) natural gas
Most of the fuels contain carbon as one of the constituents. Name a fuel which has very high calorific value but not contain carbon.
Write the full forms of CNG and LPG.
Explain why, natural gas is considered to be a good fuel.
What is meant by conventional sources of energy? Write the names of two conventional sources of energy.
Why is LPG considered a good fuel?
The aviation fuel which is used in the engines of jet aeroplanes is:
(a) diesel
(b) kerosene
(c) petrol
(d) CNG
Which of the following is needed for the formation of biogas from cow-dung and which not?
Water, Oxygen
An energy efficient devices for producing light is:
(a) DLF
(b) CFL
(c) FCL
(d) LPG
Fill in the blank
Coal, petroleum, and natural gas are _________fuels.
Give an account of the use of solar energy.
What do you know about wind energy?
Can you tell?
Which forms of energy from the sun are used in solar energy devices?
Why should we conserve the non-renewable sources of energy?
Which part of the solar cooker is responsible for greenhouse effect?
Why is there a need for harnessing non-conventional sources of energy? How can energy be harnessed from the sea in different ways?
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.
