Question

A.
S.
IV. Lon
d. Carbon dioxide
1.
4. Which of the following is a characteristic of an ideal fuel?
a. High calorific value
b. High rate of combustion
c. Low ignition temperature
d. Should cause pollution
5. Which of the following is the main constituent of natural gas?
a. Oxygen b. Petrol
c. Methane
6. Which of the following is an air pollutant?
a. Carbon monoxide
b. Oxides of nitrogen and sulphur
c. Soot particles
d. All of these
7. In which of the following cases, water should not be used for extinguishing fire
a. Burning diesel b. Burning petrol C. Electrical fire
8. Which of the following fuels is considered an ideal fuel for domestic use?
a. Hydrogen b. Petrol
C. Cow dung cakes d. Methane
9. Which of the following types of coal is used for manufacturing coke?
C. Bituminous coal d. Anthracite
b. Peat
a. Lignite
10. Which of the following products of petroleum is used in candles, ointments and
Vaseline?
d. Asphalt
b. Paraffin wax
d. All of these
c. Lubricating oil
a. Fuel oil​

Answer 1

Answer:

high caloific value and low

Answer 2

Answer:

4. a. high calorific value

5. c. methane

6. d. all of these

7. all of these

8. d. methane

9. c. bituminous coal

10. b. paraffin wax