Science
Answer
| S. No. | LPG | Wood |
|---|---|---|
| 1. | LPG is a gaseous fuel. | Wood is a solid type of fuel. |
| 2. | LPG doesn't produce smoke and causes less pollution. | Wood produces lots of smoke and causes more pollution. |
| 3. | No cutting of trees is required to produce LPG. | Wood is obtained by cutting trees which leads to deforestation. |
| 4. | LPG has a higher calorific value of 55000 kJ/kg. | Wood has a lower calorific value ranging between 17000 and 22000 kJ/kg. |
| 5. | LPG is easier to store and transport. | Wood requires a lot of storage space and transport is difficult due to more weight. |
| 6. | Ignition temperature of LPG is low. | Ignition temperature of wood is high. |
Related Questions
Make a labelled diagram of a candle flame.
Fill in the blanks.
(a) Burning of wood and coal causes …………… of air.
(b) A liquid fuel, used in homes is ……………
(c) Fuel must be heated to its …………… …………… before it starts burning.
(d) The fire produced by oil cannot be controlled by ……………
Give reasons.
(a) Water is not used to control fires involving electrical equipment.
(b) LPG is a better domestic fuel than wood.
(c) Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not.
Explain how the use of CNG in automobiles has reduced pollution in our cities.