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प्रश्न
State whether the following is True or False.
China, the USA, and Spain are major producers of wind energy.
विकल्प
True
False
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उत्तर
True
APPEARS IN
संबंधित प्रश्न
Compare and contrast fossil fuels and the Sun as direct sources of energy
Define ignition temperature of a fuel.
A non-renewable source of energy is:
(a) wood
(b) alcohol
(c) hydrogen gas
(d) natural gas
The fuel having the lowest calorific value is:
(a) coal
(b) wood
(c) charcoal
(d) kerosene
The calorific values of three fuels A, B and C are 33 kJ/g, 48 kJ/g and 150 kJ/g, respectively. A is solid, B is liquid and C is a gas at room temperature. One combustion, both A and B produce carbon dioxide while C explodes forming steam. B and C leave no residue after combustion while A leaves behind some solid residue. Which one of the three fuels is the most ideal? Give two reasons to support your answer.
Complete the following sentence:
Domestic gas cylinders like Indane contain mainly ..............
Explain how, sun is considered to be the ultimate source of fossil fuels
Which fossil fuels were formed by the buried remains of small plants and animals?
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?
What should be the minimum wind speed for the satisfactory working of a wind-powered electric generator?
State whether the following statement is true or false:
Tidal energy is one of the forms in which solar energy manifests itself in oceans.
Name the biomass which is still widely used as a source of heat energy in many household of our country.
Why is biogas considered an ideal fuel for domestic use?
Which of the following sources of energy are not derived from the sun?
Biomass, Wind, Ocean thermal energy, Geothermal energy, Nuclear fuels, Hydroelectricity, Wave energy, Coal, Petroleum, Tidal energy
How long are the energy resources of the earth like coal, petroleum and natural gas expected to last?
The world's known coal reserves are expected to last for about:
(a) 200 years
(b) 400 years
(c) 500 years
(d) 100 years
Choose the correct answer.
Windmills have been used for many centuries in
Can you tell?
What is ‘green energy’?
Who is the odd one out?
Coal is one of the ______ used to cook food.
