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प्रश्न
State whether the following is True or False.
Coal takes millions of years to form.
विकल्प
True
False
उत्तर
True
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संबंधित प्रश्न
What is a source of energy? What are the two main categories of the sources of energy?
What is meant by a non-renewable source of energy? Give two examples of non-renewable source of energy.
Which of the following fuels has the highest calorific value?
(a) natural gas
(b) methane gas
(c) hydrogen gas
(d) biogas
Name any one hydrocarbon fraction obtained during the fractional distillation of petroleum which is used as a domestic fuel.
Which gaseous fuel is being used increasingly in transport vehicles like cars and buses these days?
Complete the following sentence:
Domestic gas cylinders like Indane contain mainly ..............
Write a short note on the pollution caused by burning fossil fuels.
Why is LPG considered a better fuel than coal?
Why is the leakage of LPG detected easily although it is odourless? State the steps to be taken in case its leakage is detected in the kitchen.
Describe how fossil fuels were formed.
Which of the following is not a fossil source of energy?
(a) kerosene oil
(b) cow-dung cakes
(c) CNG
(d) coal
Name the constituents of biogas.
Compare and contrast biomass and hydroelectricity as sources of energy.
The constituent of biogas which makes it an excellent fuel is:
(a) butane
(b) methane
(c) propane
(d) ethane
Name five renewable and three non-renewable sources of energy.
State whether the following is True or False.
China, the USA, and Spain are major producers of wind energy.
State the main difference between the renewable and non-renewable sources of energy.
Name two forms of sea energy.
Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilisation?
Choose the incorrect statement regarding wind power
