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प्रश्न
Name the original source of wind energy.
उत्तर
The sun is the original source of wind energy.
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संबंधित प्रश्न
Calorific value and ignition temperature of fuel X are 75 kJ/g and 20°C respectively. These values for fuel Y are 50 kj/g and 75°C respectively. On burning, the fuel Y produces only CO2while fuel X produces CO2 and CO. Which of the two is a better fuel? Give two reasons to support your answer.
What are the disadvantages of burning fossil fuels?
The aviation fuel which is used in the engines of jet aeroplanes is:
(a) diesel
(b) kerosene
(c) petrol
(d) CNG
LPG consists mainly of:
(a) butane
(b) ethane
(c) butanone
(d) methane
Name the major component of biogas.
The constituent of biogas which makes it an excellent fuel is:
(a) butane
(b) methane
(c) propane
(d) ethane
Fill in the blank
Solar cells use the power supplied by the ______.
Fill in the blank
Coal, petroleum, and natural gas are _________fuels.
Which of the following is a non-renewable source of energy?
Why petrol is exhaustible natural resource whereas sunlight is not? Explain.
