Coal and Petroleum

Q.

Coal and Petroleum are not fossil fuels.

1. True

2. False

Q. From the given options, identify the poisonous gas which is formed upon incomplete combustion of fuels.

1. Carbon monoxide ($\text{CO}$)
2. Carbon dioxide (${\text{CO}}_2$)
3. Nitrogen dioxide (${\text{NO}}_2$)
4. Carbon Trioxide (${\text{CO}}_3$)

Q.

How to determine the molecules formed during a combustion reaction?

Q. Reaction (i) represents complete combustion of carbon forming carbon dioxide (CO₂) whereas the reaction (ii) shows the formation of carbon monoxide (CO) due to incomplete combustion. Balance the equation (ii) and find the value of ‘X’ which will explain the insufficient amount of oxygen involved.
(i) $2C+2O_2\to 2C{O}_2$
(ii) $2C+x{O}_2\to 2CO$

1. 1
2. 0.5
3. 2
4. 4

Q.

Which of the following can be attributed as a point of rapid increase in energy demand?

1. World war

2. Industrial revolution

3. Independence

4. British conquest

Q.

Among the products of combustion of coal and petroleum, which oxide is not poisonous?

1. Cabon dioxide

2. Carbon monoxide

3. Sulphur oxides

4. Nitrogen oxides