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प्रश्न
Explain why is it no wise to regard wood as a renewable sources of energy.
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उत्तर
Use of wood is a renewable source but is not advised to use, because saplings take a long time to become a tree.
संबंधित प्रश्न
On what basis would you classify energy sources as
(a) renewable and non-renewable?
(b) exhaustible and inexhaustible?
Are the options given in (a) and (b) the same?
"The ignition temperature of a fuel is 80°C". What does this mean?
Most of the fuels contain carbon as one of the constituents. Name a fuel which has very high calorific value but not contain carbon.
Apart from cattle dung, what other substances can be added to a biogas plant?
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
The non-renewable source of energy among the following is:
(a) hydroelectricity
(b) sewage gas
(c) natural gas
(d) gobar gas
What do you know about wind energy?
Can you tell?
What are the non-conventional energy resources?
State the main difference between the renewable and non-renewable sources of energy.
Write True/False against the following statement.
Oxygen in air is an exhaustible natural resource.
