Advertisements
Advertisements
प्रश्न
Why is the use of wood as a fuel not advisable although wood is a renewable source of energy?
Advertisements
उत्तर
Wood is obtained from trees. Hence, trees need to be cut down for wood to be used as a fuel.
Also, burning wood releases a lot of smoke which pollutes the atmosphere.
APPEARS IN
संबंधित प्रश्न
Name any four fractions obtained from petroleum which are used as fuels.
Apart from cattle dung, what other substances can be added to a biogas plant?
Name the biomass which is still widely used as a source of heat energy in many household of our country.
What are the raw materials used for making biogas?
The constituent of biogas which makes it an excellent fuel is:
(a) butane
(b) methane
(c) propane
(d) ethane
Renewable source of energy is :
State whether the following is True or False.
Coal and petroleum are renewable energy resources.
Name a few major producers of petroleum in the world.
Sunlight and air are inexhaustible natural resources. Comment.
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)
