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प्रश्न
Why is charcoal considered better fuel than wood?
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उत्तर
Charcoal is considered a better fuel than wood because of the
following reasons:
- Calorific value of charcoal is higher than the calorific value of wood.
- It produces no smoke.
- It burns easily without any flame.
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संबंधित प्रश्न
Why are we looking at alternate sources of energy?
Name two sources of energy that you think are renewable. Give reason for your choice.
Coal is said to be formed from the wood of trees. Why then is coal considered to be a non-renewable source of energy whereas wood is a renewable source of energy?
A good fuel is one which possesses:
(a) high calorific value and low ignition temperature
(b) high calorific value and high ignition temperature
(c) high calorific value and moderate ignition temperature
(d) low calorific value and moderate ignition temperature
What is the composition of liquefied petroleum gas (LPG)?
Which of the following is not an example of a biomass energy source?
(a) wood
(b) biogas
(c) atomic energy
(d) cow-dung
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
State whether the following is True or False.
Coal takes millions of years to form.
State whether the following is True or False.
The Sardar Sarovar Dam is built on the river Narmada.
Exhaustible natural resources are
