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प्रश्न
Who is the odd one out?
विकल्प
Leaving the fan on in a vacant room
Leaving the TV on while working
Using AC during winter
Putting off the light when going out
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उत्तर
Putting off the light when going out
Explanation:
Putting off the light when going out is the odd one out as it is one of the measures of saving energy. The rest involves waste of energy.
संबंधित प्रश्न
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?
Most of the fuels contain carbon as one of the constituents. Name a fuel which has very high calorific value but not contain carbon.
Name the component which is found in natural gas well as in biogas.
Explain why, natural gas is considered to be a good fuel.
The natural gas consists mainly of:
(a) methane
(b) ethane
(c) propane
(d) butane
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?
Can you tell?
What is ‘green energy’?
Who is the odd one out?
In a hydro power plant ______.
Some natural resources are given below. Classify them into the exhaustible and inexhaustible natural resources.
| air, coal, natural gas, sunlight, petroleum, minerals, forests, oxygen |
