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प्रश्न
Why should we conserve the non-renewable sources of energy?
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उत्तर
We should conserve the non-renewable sources of energy because if these sources once finished, cannot be regenerated over a reasonable period of time.
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संबंधित प्रश्न
"The ignition temperature of a fuel is 80°C". What does this mean?
What is the main constituent of:
(1) petroleum gas?
(2) natural gas?
Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.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 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
What are the two ways in which cow-dung can be used as a fuel? Which of them is better and why?
Fill in the blank
Solar cells use the power supplied by the ______.
Can you tell?
Which forms of energy from the sun are used in solar energy devices?
Why are fossil fuels called non-renewable sources of energy?
In a hydro power plant ______.
Air is a natural resource and cannot be exhausted by human activities. It is known as inexhaustible natural resource. Which of the following is another inexhaustible natural resource?
