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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 which you consider to be non-renewable. Give reason for your choice.
Which of the following is not a renewable source of energy?
(a) wind
(b) flowing water
(c) fossil fuels
(d) fuel wood
Why is LPG considered a good fuel?
Why is LPG considered a better fuel than coal?
The natural gas consists mainly of:
(a) methane
(b) ethane
(c) propane
(d) butane
LPG consists mainly of:
(a) butane
(b) ethane
(c) butanone
(d) methane
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
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.
How does this device help in controlling air pollution?
State whether the following statement is true or false:
Tidal energy is one of the forms in which solar energy manifests itself in oceans.
Suggest a safe and efficient method for the disposal of biowastes and sewage materials. How is this method advantageous to us?
Write any two advantages of using biogas.
The major component of biogas is:
(a) hydrogen
(b) butane
(c) hydrogen sulphide
(d) methane
A certain form of energy is available due to the difference in the temperature of water at the surface of the ocean and its deeper levels.
(a) Name the form of energy.
(b) Is this energy ultimately derived from the sun or not?
(c) Explain how this form of energy can be converted into electricity.
(d) What is the minimum temperature difference in water at the surface of ocean and its deeper level which is required to operate power plants based on is energy?
The gravitational pull of the moon cause the sea-water to rise periodically.
(a) What name is given to the condition of the sea when water to rise periodically.
(b) What name is given to the condition of the sea when its raised water recedes?
(c) What name is given to the energy which can be harnessed from this natural phenomenon?
(d) Draw labelled diagram to show how this energy can be harnessed from this natural
What type of nuclear reaction is responsible for the liberation of energy:
in a nuclear reactor?
State whether the following is True or False.
The Sardar Sarovar Dam is built on the river Narmada.
Give an account of the use of solar energy.
Choose the odd one:
Look at the figure where petroleum and natural gas deposits are shown. Why do we find oil layer above water layer?
