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प्रश्न
State whether the following is True or False.
Coal and petroleum are renewable energy resources.
पर्याय
True
False
उत्तर
False
Correct Statement: Coal and petroleum are non-renewable energy resources.
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संबंधित प्रश्न
"The calorific value of cooking gas (LPG) is 50 kJ/g". What does it mean?
Which of the following is not a renewable source of energy?
(a) wind
(b) flowing water
(c) fossil fuels
(d) fuel wood
Calorific value and ignition temperature of fuel X are 75 kJ/g and 20°C respectively. These values for fuel Y are 50 kj/g and 75°C respectively. On burning, the fuel Y produces only CO2while fuel X produces CO2 and CO. Which of the two is a better fuel? Give two reasons to support your answer.
Which fossil fuels were formed by the buried remains of small plants and animals?
The aviation fuel which is used in the engines of jet aeroplanes is:
(a) diesel
(b) kerosene
(c) petrol
(d) CNG
LPG consists mainly of:
(a) butane
(b) ethane
(c) butanone
(d) methane
The energy in petrol originally came from the sun. Explain how it got into petrol.
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?
State whether the following statement is true or false:
Tidal energy is one of the forms in which solar energy manifests itself in oceans.
Why is biogas considered an ideal fuel for domestic use?
What are the raw materials used for making biogas?
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?
State whether the following is True or False.
Renewable energy resources have limited supply in nature.
What are fossil fuels?
Fill in the blanks in the following sentence.
Coal is one of the ______ used to cook food.
Write True/False against the following statement.
Resources which are present in unlimited quantity in nature are called exhaustible natural resources.
Some natural resources are given below. Classify them into the exhaustible and inexhaustible natural resources.
| Air | coal | natural gas | sunlight | petroleum | minerals | forests | oxygen |
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.
