Harmful Products from Burning of Fuel

Q.

When steam is passed over red hot coke, what is produced?

1. Carbon monoxide and hydrogen

2. Carbon Dioxide and Hydrogen

3. Water gas

4. Syngas

Q.

Answer in short.

What is acid Rain?

Q. Name two gases that are mainly responsible for acid rain?​

Q.

Name any harmful product released by the burning of fuels.

Q. It is dangerous to burn coal in a closed room. The gas 'X'produced can kill persons sleeping in that room. The gas 'X' produced is_.

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

Q. Shyam was cooking potato curry on a chulha. To his surprise, he observed that the copper vessel was getting blackened from outside. It may be due to:​

1. proper combustion of fuel.​
2. improper cooking of potato curry.​
3. improper combustion of the fuel.​
4. burning of copper vessels.​

Q. Name any two sources which cause air pollution due to suspended particulate matter ​

Q.

What are the effects of burning fuels on the environment?

Q. Which gas is produced due to incomplete burning of fuels?

1. $C{O}_2$
2. $CO$
3. $S{O}_2$
4. $S{O}_3$

Q. Harmful effects of fuel
Paragraph writing

Q. How burning of fuels such as coal petroleum and diesel lead to acid rain. How acid rain is harmful

Q.

The suspended particles released by combustion of coal in air may lead to a health disease. Select the correct option.

1. Night Blindness

2. Asthma

3. Arthritis

4. Goitre

Q. Acid rain is very harmful to crops, buildings and soil. It is the main reason for discolouration of Taj Mahal over years. Which among the following statement is the main cause of acid rain?

1. Incomplete combustion of fuels releases carbon monoxide which dissolves in rain water to give acid rain.
2. Oxides of sulphur and carbon released during combustion of fuels dissolve in rain water to give acid rain.
3. Wood when burnt in open releases methane and other gases which cause acid rain.
4. Carbon particles which are released in the atmosphere dissolve in rain water to given acid rain.

Q.

Give reason for the following:
(a) Air holes of the gas burners have to be adjusted when heated vessels get blackened by the flame.
(b) Use of synthetic detergents causes pollution problems.

Q.

Oxides of nitrogen and sulphur cause ______ rain when reacted with water vapour present in atmosphere.

1. salty

2. acid

3. neutral

4. basic

Q. Give reason why LPG is a better domestic fuel than wood.
[3 marks]
[NCERT Q.5(b)]
[Calorific value]

Q.

Pollution levels in cities are increasing day after day. From the given options, select the fuel that can be recommended in place of petrol and diesel to reduce toxic emissions?

1. Geothermal

2. Nuclear

3. CNG

4. Tidal

Q.

What is SPM? Which type of pollution it might cause? [2 MARKS]

Q.

Oxides of nitrogen and sulphur cause ______ rain when reacted with water vapour present in atmosphere.

1. acid

2. basic

3. salty

4. neutral

Q. During combustion of coal, the supporter of combustion is:

1. Carbon monoxide
2. Nitrogen
3. Oxygen
4. Carbon dioxide

Q.

What product obtained on burning fossil fuels can prevent oxygen from binding with haemoglobin?

1. Water

2. Carbon dioxide

3. Carbon monoxide

4. Sulphur

Q.

The suspended particles released by combustion of coal in air may lead to a health disease.

1. Bone cancer

2. Asthma

3. Goitre

4. Arthritis

Q. Question 15
Shyam was cooking potato curry on a chulha. To his surprise, he observed that the copper vessel was getting blackened from outside. It may be due to:

(a) proper combustion of fuel
(b) improper cooking of potato curry.
(c) improper combustion of the fuel.
(d) burning of copper vessel.

Q.

Which of the following diseases is caused by the suspended particles in the earth's atmosphere, released by combustion of coal?

1. Goitre

2. Bone cancer

3. Asthma

4. Arthritis

Q.

From the given options, select the fuel that can be recommended in place of petrol and diesel to reduce toxic emissions?

1. Tidal

2. Nuclear

3. CNG

4. Geothermal

Q.

When do we use the term "excess air"?

1. The amount of air supplied to the fuel that is greater than usual.

2. Air supplied more than theoretical requirement.

3. Combustion under windy condition.

4. Excess air results in less $C{O}_2$

Q. A is a substance that produces a lot of on combustion.

1. fuel
2. heat
3. water
4. air

Q.

What product obtained on burning fossil fuels can prevent oxygen from binding with haemoglobin?

1. Carbon monoxide

2. Carbon dioxide

3. Water

4. Sulphur

Q. Sleeping in a closed room with burning angithi (brazier) can prove to be fatal. Choose the option which best justifies the statement.

1. Coal is a poisonous substance.
2. A poisonous gas, carbon monoxide, is produced due to the incomplete combustion of coal.
3. Burning of coal in a closed room evolves carbon dioxide and water vapour, which are harmful.
4. A poisonous gas, carbon monoxide, is produced due to the incomplete combustion of coal.

Q. Acid rain is very harmful to crops, buildings and soil. It is the main reason for discolouration of Taj Mahal over years. Which among the following statements is the main cause of acid rain?

1. Incomplete combustion of fuels releases carbon monoxide which dissolves in rain water to give acid rain.
2. Carbon particles which are released in the atmosphere dissolve in rain water to given acid rain.
3. Oxides of sulphur and carbon released during combustion of fuels dissolve in rain water to give acid rain.
4. Wood when burnt in open releases methane and other gases which cause acid rain.