Sulphur and Nitrogen

Q.

The pollutants released from oil refineries cause:

1. Permanent lung damage and other respiratory problems

2. Acid rain

3. Reduces visibility

4. Ozone layer depletion

Q. Give two effects of each of the following air pollutants. [5 MARKS]

i. Carbon monoxide
ii. Sulphur dioxide
iii. Nitrogen oxides
iv. Ground level ozone
v. particulate matter

Q.

The pollutant that is released from oil refineries is oxygen.

1. True
2. False

Q. (b) Fill in the blanks

The most abundant element in the earth’s crust is _______.

Q. Is carbon monoxide only harmful or can it be used for some other positive matters also?

Q. Oil refineries emit oxides of .

1. carbon
2. aluminium
3. nitrogen

Q.

Oxides of nitrogen and sulphur form ___ when they react with water vapour present in atmosphere.

1. salts

2. acids and bases

3. bases

4. acids

Q. Which of the following groups contains only substances which are pollutants?
(a) carbon monoxide, sulphur dioxide, smoke
(b) sulphur dioxide, oxygen, nitrogen
(c) carbon dioxide, nitrogen, argon
(d) carbon monoxide, sulphur dioxide, neon

Q.

Marble cancer refers to

1. damage of marbles due to normal rain

2. damage of marbles due to acid rain

3. shining of marbles due to acid rain

4. darkening of marbles due to acid rain

Q. Which major pollutant is released from coal powered power plants?

1. Sulphur dioxide
2. Chlorofluorocarbons
3. Carbon monoxide
4. Methane

Q.

Select the oxides responsible for acid rain.

1. Sulphur dioxide

2. Silicon dioxide

3. Nitrogen dioxide

4. Any metal oxide

Q. Which of the following are pollutants of air?

1. (i), (ii) and (iii)
2. Only (i) and (ii)
3. Only (ii) and (iii)
4. Only (i) and (iii)

Q. The phenomenon involving the damage of Taj Mahal due to acid rain is called _____.

1. stone cancer
2. stone corrosion
3. acid cancer
4. marble cancer

Q. Nitrogen dioxide reacts with water to form nitric acid.

1. True
2. False

Q.

Contamination of air by unwanted substances is called ______.

1. air utilisation

2. air pollution

3. air purification

4. air conservation

Q.

Oxides of sulphur and oxygen are released by oil refineries.

1. True

2. False

Q.

Oxides of nitrogen and sulphur form ___ when they react with water vapour present in atmosphere.

1. acids and bases

2. bases

3. salts

4. acids

Q.

Acid rain pollutes

1. Air

2. Water

3. Soil

4. Both soil & water