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प्रश्न
State whether the following is True or False.
Coal and petroleum are renewable energy resources.
विकल्प
True
False
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उत्तर
False
Correct Statement: Coal and petroleum are non-renewable energy resources.
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संबंधित प्रश्न
"The ignition temperature of a fuel is 80°C". What does this mean?
Which of the following fuels has the highest calorific value?
(a) natural gas
(b) methane gas
(c) hydrogen gas
(d) biogas
Name any four fractions obtained from petroleum which are used as fuels.
What are the disadvantages of burning fossil fuels?
Why is LPG considered a good fuel?
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
State whether the following statement is true or false:
Tidal energy is one of the forms in which solar energy manifests itself in oceans.
Describe the construction and working of a biogas plant with the help of a labelled diagram.
Write any two advantages of using biogas.
The major component of biogas is:
(a) hydrogen
(b) butane
(c) hydrogen sulphide
(d) methane
A certain form of energy is available due to the difference in the temperature of water at the surface of the ocean and its deeper levels.
(a) Name the form of energy.
(b) Is this energy ultimately derived from the sun or not?
(c) Explain how this form of energy can be converted into electricity.
(d) What is the minimum temperature difference in water at the surface of ocean and its deeper level which is required to operate power plants based on is energy?
You have three unlabelled test tubes containing ethanol, ethanoic acid and soap solution. Explain the method you would use to identify the compounds in different test tubes by chemical tests using litmus paper and sodium metal.
What are non-renewable resources of energy? Give two examples of such resources.
Name five renewable and three non-renewable sources of energy.
State whether the following is True or False.
Coal takes millions of years to form.
Who is the odd one out?
Why is there a need for harnessing non-conventional sources of energy? How can energy be harnessed from the sea in different ways?
Match the items given in Column I with the items of Column II.
| Column I | Column II |
| (a) Used for road surfacing | (i) Black gold |
| (b) Natural gas | (ii) Vaseline and candles |
| (c) Petroleum | (iii) Bitumen |
| (d) Paraffin wax | (iv) CNG |
Imagine that all the exhaustible natural resources are exhausted by human activities. Do you think survival of living beings would be possible? If yes, why? If not, why not?
Why petrol is exhaustible natural resource, whereas sunlight is not? Explain.
