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प्रश्न
Can you tell?
Why should we save energy?
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उत्तर
We should save energy to preserve limited natural resources, reduce environmental pollution, cut costs, support sustainability, and ensure energy availability for future generations.
संबंधित प्रश्न
Classify the following
Coal, Wind, Tides, Petroleum,Wood, Natural gas
What is the basis of above classification?
Coal is said to be formed from the wood of trees. Why then is coal considered to be a non-renewable source of energy whereas wood is a renewable source of energy?
A good fuel is one which possesses:
(a) high calorific value and low ignition temperature
(b) high calorific value and high ignition temperature
(c) high calorific value and moderate ignition temperature
(d) low calorific value and moderate ignition temperature
Which of the following fuels has the highest calorific value?
(a) natural gas
(b) methane gas
(c) hydrogen gas
(d) biogas
Which gaseous fuel is being used increasingly in transport vehicles like cars and buses these days?
State two important uses of 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Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.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 another element which is usually found in combination with X in fossil fuels.
Fill in the following blank with suitable word:
Biomass is another form in which ........... energy manifests itself.
One of the following is not required in the formation of biogas in a biogas plant. This is:
(a) cow-dung
(b) water
(c) oxygen
(d) anaerobic bacteria
State whether the following is True or False.
Coal and petroleum are renewable energy resources.
