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प्रश्न
State whether the following is True or False.
Renewable energy resources have limited supply in nature.
विकल्प
True
False
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उत्तर
False
Correct Statement: Renewable energy resources have an unlimited supply in nature.
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संबंधित प्रश्न
Name two energy sources that you would consider to be renewable. Give reasons for your choices.
State any four characteristics of a good source of energy.
A non-renewable source of energy is:
(a) wood
(b) alcohol
(c) hydrogen gas
(d) natural gas
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.
Which of the following is needed for the formation of biogas from cow-dung and which not?
Water, Oxygen
The constituent of biogas which makes it an excellent fuel is:
(a) butane
(b) methane
(c) propane
(d) ethane
The major component of biogas is:
(a) hydrogen
(b) butane
(c) hydrogen sulphide
(d) methane
Which of the following is ultimately not derived from the sun's energy (or solar energy)?
(a) wind energy
(b) nuclear energy
(c) biomass energy
(d) ocean thermal energy
Which of the two is more energy efficient: filament type electric bulb or CFL? Why?
Select the renewable and non-renewable sources of energy from the following :
- Coal
- Wood
- Water
- Diesel
- Wind
- Oil
Name five renewable and three non-renewable sources of energy.
Can you tell?
What is ‘green energy’?
Who is the odd one out?
Who is the odd one out?
Name the major constituent of natural gas.
Higher Order Thinking Skill (HOT)
What are the objectives for replacing non-conventional energy resources from conventional energy resources?
Which part of the solar cooker is responsible for greenhouse effect?
Fill in the blanks and complete the story.
About 300 million years ago, the earth had dense ______ in low lying wetland areas. Due to natural processes like ______, these forests got buried under the ______. As more ______ deposited over them, they were compressed. The ______ also rose as they sank deeper and deeper. Under high ______ and high ______, dead plants got slowly converted into coal.
Complete the crossword in figure with the help of the clues:
Across
1. Fuels obtained from dead remains of living organisms. (6, 5)
2. A process by which the various constituents of petroleum are separated. (8)
3. A porous black substance obtained from coal. (4)
4. Another name for motor fuel. (6)
Down
5. The substance obtained by carbonisation. (4)
6. Fuel for heavy motor vehicles. (6)
7. A petroleum product used for road surfacing. (7)
8. Dead remains of sea animals got converted into it. (9)
