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प्रश्न
State whether the following is True or False.
Renewable energy resources have limited supply in nature.
पर्याय
True
False
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उत्तर
False
Correct Statement: Renewable energy resources have an unlimited supply in nature.
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संबंधित प्रश्न
Give the names of two energy sources that you would consider to be exhaustible. Give reasons for your choices.
Define ignition temperature of a fuel.
Fill in the following blank with a suitable word:
The amount of heat produce by burning a unit mass of a fuel completely is known as its ............ value.
An examples of a renewable source of energy is:
(a) petrol
(b) natural gas
(c) biogas
(d) kerosene
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 fossil fuels? Give three examples of fossil fuels.
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Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.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.
The energy in petrol originally came from the sun. Explain how it got into petrol.
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?
Fill in the following blank with suitable word:
Tidal waves build up and recede ........... a day.
Why is biogas considered an ideal fuel for domestic use?
Write any two advantages of using biogas.
How long are the energy resources of the earth like coal, petroleum and natural gas expected to last?
Fill in the blank
_______is the coal with the highest percentage of coal.
What do you know about wind energy?
Can you tell?
Why should we save energy?
Can you tell?
What are the non-conventional energy resources?
Tidal energy is ______ type of energy.
Which of the following is a pair of exhaustible natural resources?
