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प्रश्न
State whether the following is True or False.
The Sardar Sarovar Dam is built on the river Narmada.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
Compare and contrast fossil fuels and the Sun as direct sources of energy
"The ignition temperature of a fuel is 80°C". What does this mean?
Which of the following is not a renewable source of energy?
(a) wind
(b) flowing water
(c) fossil fuels
(d) fuel wood
State one important use of CNG these days.
Describe how fossil fuels were formed.
Explain how, sun is considered to be the ultimate source of fossil fuels
Coal cannot be converted into one of the following forms of energy. This is:
(a) coal gas
(b) electricity
(c) oil
(d) charcoal
Compare the sun and the fossil fuels as the sources of energy.
Compare and contrast biomass and hydroelectricity as sources of energy.
Which of the following sources of energy are not derived from the sun?
Biomass, Wind, Ocean thermal energy, Geothermal energy, Nuclear fuels, Hydroelectricity, Wave energy, Coal, Petroleum, Tidal energy
The fuel which is not obtained from biomass is:
(a) firewood
(b) cow-dung cakes
(c) coke
(d) charcoal
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?
When the material A mined from the earth is heated strongly in an insufficient supply of air, it produces a solid fuel B which consists mainly of carbon. When another material C obtained from trees is heated in an insufficient supply of air, it produces another solid fuel D which also consists mainly of carbon. Name A, B, C and D
Why is the use of wood as a fuel not advisable although wood is a renewable source of energy?
What is the main difference between renewable and non-renewable energy resources?
Describe the four major types of coal.
Which of the following is a non-renewable source of energy?
Write True/False against the following statement.
Oxygen in air is an exhaustible natural resource.
Sunlight and air are inexhaustible natural resources. Comment.
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.
