Ideal Fuel

Q. Select the quality that a good fuel should possess.

1. Low calorific value.
2. It should burn too fast.
3. High calorific value.
4. It should burn too slow.

Q.

The usage of LPG in rural areas should be promoted because

1. it burns more easily than wood​.

2. it is easily available in the village.

3. it has a higher calorific value than wood.

4. it is a cleaner fuel than wood.

Q. Which of these are essential requirements for a fire to start and continue?

1. Fuel
2. Air (oxygen)
3. Heat
4. All of the above

Q. Coal is a fossil fuel and it cannot be prepared in a laboratory or industry. Which of the following options best justifies the statement?

1. Formation of coal is a very slow process.
2. Formation of coal needs very low pressure and temperature.
3. Formation of coal needs very high pressure and temperature.
4. Formation of coal causes air pollution.

Q. Explain the energy obtained from fossil fuels is not green energy?

Q. Coal is majorly composed of

1. Sulphur
2. Carbon
3. Carbon dioxide
4. Nitrogen

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Name some petroleum products which are not used as fuel and also state their applications.