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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.
संबंधित प्रश्न
Fill in the following blank with a suitable word:
The amount of heat produce by burning a unit mass of a fuel completely is known as its ............ value.
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?
The fuel having the lowest calorific value is:
(a) coal
(b) wood
(c) charcoal
(d) kerosene
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.
What is the main constituent of:
(1) petroleum gas?
(2) natural gas?
Most of the sources of energy that we sue represent stored solar energy. Which of the following is not ultimately derived from the sun's energy?
(a) wind energy
(b) geothermal energy
(c) fossil fuels
(d) biomass
The constituent of biogas which makes it an excellent fuel is:
(a) butane
(b) methane
(c) propane
(d) ethane
State whether the following is True or False.
Coal and petroleum are renewable energy resources.
What is the main difference between renewable and non-renewable energy resources?
Make a list of conventional and non-conventional sources of energy. Give a brief description of harnessing one nonconventional source of energy.
