Effect of Air Pollution on Plants and Animals

Q.

What are the natural causes of global warming?

Q. The incomplete combustion of firewood in homes produces a very poisonous gas X. When inhaled, gas X combines with substance Y present in blood and reduces the capacity of blood to carry gas Z, causing respiratory problems and suffocation. Identify X, Y and Z.

1. X $\to$ carbon dioxide
   Y $\to$ haemoglobin
   Z $\to$ oxygen
2. X $\to$ nitrogen dioxide
   Y $\to$ chloroplast
   Z $\to$ carbon dioxide
3. X $\to$ oxygen
   Y $\to$ haemoglobin
   Z $\to$ carbon dioxide
4. X $\to$ carbon monoxide
   Y $\to$ haemoglobin
   Z $\to$ oxygen

Q.

What is the role of UNEP in protecting the ozone layer? Explain. [3 MARKS]

Q.

Contamination of air by unwanted substances is called ______.

1. air utilisation

2. air pollution

3. air purification

4. air conservation

Q. Statement 1: Ozone layer protects us from ultraviolet rays from the Sun.

Statement 2: Global warming is not caused due to retention of infrared light on Earth.

1. Both statements are true
2. Both statements are false
3. Statement 1 is true, statement 2 is false
4. Statement 2 is true, statement 1 is false

Q.

What are the effects of global warming?

Q.

Select the one that has an adverse effect on the ozone layer.

1. Carbon dioxide

2. Chlorofluorocarbons

3. Soil

4. Dust particles

Q.

How does the smoke and exhaust fumes affect our health?

Q.

Question 22
Match the items of Column A with those of Column B.
$\begin{array}{cc}ColumnA& ColumnB\\ \left(a\right)Sulphurdioxide& \left(i\right)Damageozonelayer\\ \left(b\right)Carbondioxide& \left(ii\right)Reducesoxygencarrying-capacityofblood\\ \left(c\right)Carbonmonoxide& \left(iii\right)Acidrain\\ \left(d\right)Chlorfluorocarbons& \left(iv\right)Greenhousegas\end{array}$

Q. Identify A, B and C.
$\begin{array}{ccc}\text{Air pollutant}& \text{Major Source}& \text{Effect}\\ \text{A}& \text{Refrigerator}& \text{Depletion of ozone layer}\\ \text{Sulphur dioxide}& \text{B}& \text{Irritation of eyes and respiratory tract}\\ \text{Carbon monoxide}& \text{Industrial smoke}& \text{C}\end{array}$

1. A: Carbon monoxide, B: Burning of coal, C: Increased oxygen carrying capacity of blood
2. A: CFC, B: Burning of coal, C: Lowered oxygen carrying capacity of blood
3. A: CFC, B: Pesticides, C: Lung cancer
4. A: Carbon dioxide, B: Industrial leakage, C: Mental weakness

Q.

Which of the following oxides upon dissolving with rain cause acid rain?

1. Nitrogen dioxide
2. Sulphur dioxide
3. Silicon dioxide
4. Sodium oxide

Q. X is a substance which is present usually in air in its gaseous state.
X combines with non-metallic oxides in air to form inorganic acids and pours down as acid rain.
Find X.

1. Sulphur
2. Nitrogen
3. Oxygen
4. Water

Q.

The pollutants released from oil refineries cause:

1. permanent lung damage and other respiratory problems.
2. acid rain.
3. reduced visibility.
4. deforestation.

Q. The addition of harmful materials to water that reduces its quality is called water pollution.

1. True
2. False

Q. Which of the following are greenhouse gases?

1. Nitrogen
2. Water vapour
3. Methane
4. Carbon dioxide

Q. Which of the following air pollutant reduces the oxygen-carrying capacity of blood?

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

Q.

Harmful chemicals released out from the chemical factories cause air pollution.

1. True

2. False

Q.

Which of the following is/are responsible for air pollution?

1. Volcanic eruption
2. Factories
3. Marine oil spills
4. Playing loud music

Q. Choose the air pollutants with their effects.

1. ${\mathrm{SO}}_2$
2. Eye irritation
3. Dust
4. Silicosis
5. Pesticides
6. Mental weakness
7. CO
8. Lung capacity