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प्रश्न
Fill in the blank
Solar cells use the power supplied by the ______.
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उत्तर
Solar cells use the power supplied by the Sunlight.
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संबंधित प्रश्न
Name two sources of energy which you consider to be non-renewable. Give reason for your choice.
Classify the following
Coal, Wind, Tides, Petroleum,Wood, Natural gas
What is the basis of above classification?
A non-renewable source of energy is:
(a) wood
(b) alcohol
(c) hydrogen gas
(d) natural gas
Write the full forms of CNG and LPG.
State two important uses of natural gas
Complete the following sentence:
Domestic gas cylinders like Indane contain mainly ..............
The main constituent of petroleum gas is:
(a) methane
(b) ethane
(c) butane
(d) propane
Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.
Name the element X.
A substance X is added to LPG cylinders while filling so as to make the detection of leakage of LPG from the cylinder easy.
How does substance X make the detection of leakage of LPG easy?
Which of the following is needed for the formation of biogas from cow-dung and which not?
Water, Oxygen
Name the clean fuel which can be obtained from cow-dung.
Compare and contrast biomass and hydroelectricity as sources of energy.
Suggest a safe and efficient method for the disposal of biowastes and sewage materials. How is this method advantageous to us?
How long are the energy resources of the earth like coal, petroleum and natural gas expected to last?
Select the renewable and non-renewable sources of energy from the following :
- Coal
- Wood
- Water
- Diesel
- Wind
- Oil
Fill in the blank
__________ are examples of renewable energy resources.
Which among the following is the non-renewable resources?
Choose the incorrect statement regarding wind power
Why petrol is exhaustible natural resource, whereas sunlight is not? Explain.
