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प्रश्न
Who is the odd one out?
पर्याय
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
Compare and contrast fossil fuels and the Sun as direct sources of energy
What is the main constituent of:
(1) petroleum gas?
(2) natural gas?
Which of the following is not produced by the burning of fossil fuels?
(a) nitrogen oxides
(b) sulphur oxides
(c) sodium oxides
(d) carbon oxides
Name the constituents of biogas.
Fill in the following blank with suitable word:
Biomass is another form in which ........... energy manifests itself.
Write any two advantages of using biogas.
When the material A mined from the earth is heated strongly in an insufficient supply of air, it produces a solid fuel B which consists mainly of carbon. When another material C obtained from trees is heated in an insufficient supply of air, it produces another solid fuel D which also consists mainly of carbon. Name A, B, C and D
An energy efficient devices for producing light is:
(a) DLF
(b) CFL
(c) FCL
(d) LPG
What are non-renewable resources of energy? Give two examples of such resources.
What are fossil fuels?
