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प्रश्न
Fill in the blank
Coal, petroleum, and natural gas are _________fuels.
उत्तर
Coal, petroleum, and natural gas are fossil fuels.
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संबंधित प्रश्न
Name two energy sources that you would consider to be renewable. Give reasons for your choices.
Name two sources of energy that you think are renewable. Give reason for your choice.
Which of the following is not a renewable source of energy?
(a) wind
(b) flowing water
(c) fossil fuels
(d) fuel wood
What is the main constituent of:
(1) petroleum gas?
(2) natural gas?
State one important use of CNG these days.
Complete the following sentence:
Domestic gas cylinders like Indane contain mainly ..............
What is meant by conventional sources of energy? Write the names of two conventional sources of energy.
What are the disadvantages of burning fossil fuels?
What are the various steps which can be taken to control (or reduce) pollution caused by burning fossil fuels?
Compare the sun and the fossil fuels as the sources of energy.
Apart from cattle dung, what other substances can be added to a biogas plant?
Why is biogas considered an ideal fuel for domestic use?
State whether the following is True or False.
Coal takes millions of years to form.
Can you tell?
What is ‘green energy’?
Can you tell?
What are the non-conventional energy resources?
Why is charcoal considered better fuel than wood?
Why is there a need to harness non-conventional sources of energy? Give two main reasons.
Air is a natural resource and cannot be exhausted by human activities. It is known as inexhaustible natural resource. Which of the following is another inexhaustible natural resource?
