Air And Water Pollution Test

Result

Air And Water Pollution Test - 5

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Weekly Quiz Competition

Question 1
1 / -0

How many atoms of oxygen are present in ozone gas?

A
1

B
2

C
3

D
4

Solution

Ozone is a triatomic molecule (O₃).
Question 2
1 / -0

Identify the one which is a solution among the following substances.

A
Soil

B
Air

C
Sea water

D
Coal
Question 3
1 / -0

How is nitrogen returned to atmosphere?

A
By burning

B
By action of bacteria

C
By the action of denitrifying bacteria

D
It is trapped inside the body as organic compounds and is not released.
Question 4
1 / -0

In which form plants take up nitrogen?

A
Nitrates

B
Nitrites

C
Ammonia

D
Proteins
Question 5
1 / -0

Air is a/an

A
compound

B
element

C
mixture

D
suspension
Question 6
1 / -0

What percentage of O₂, N₂ and CO₂ is present in the air by volume?

A
O₂ 78%, N₂ 21%, CO₂ 3%

B
O₂ 21%, N₂ 78%, CO₂ 3%

C
O₂ 21%, N₂ 78%, CO₂0.03%

D
O₂ 0.03%, N₂78%, CO₂21%
Question 7
1 / -0

What is the function of ozone layer?

A
To protect us from meteorites falling from the outer surface.

B
To absorb carbon dioxide present in the air.

C
To protects us from harmful ultraviolet rays from the sun.

D
To protects us from infrared rays from the sun.
Question 8
1 / -0

Which of the following options is not an alternative fuel of the fossil fuel?

A
Unleaded petrol

B
Solar energy

C
Hydropower

D
Wind energy
Question 9
1 / -0

Burning of Coal and Petroleum mainly produces

A
Oxides of sulphur

B
Oxides of carbon

C
Oxides of nitrogen

D
All of these
Question 10
1 / -0

Which rays are trapped in earth`s atmosphere during green house effect?

A
UV

B
Visible

C
Radio waves

D
IR
Question 11
1 / -0

Which of the following options is not a natural cause of air pollution?

A
Smoke from forest fire

B
Volcanic eruptions

C
Power plants

D
Dust from forest fire
Question 12
1 / -0

Why is use of chlorofluorocarbon banned now?

A
It increases temperature of earth.

B
It causes green house effect.

C
It damages the ozone layer.

D
It reduces percentage of O₂ in the air.
Question 13
1 / -0

What causes green house effect?

A
Trapping of sun rays by the atmosphere

B
Trapping of sun rays by the ozone layer

C
Hydrogen gas causes green house effect

D
Increase in percentage of Hydrogen peroxide.
Question 14
1 / -0

Why has the gangotri glacier in the Himalayas started melting?

A
It is due to green house effect

B
It is due to white house

C
It is due to ozone layer

D
It is due to chlorofluorocarbons
Question 15
1 / -0

Which of the following gases reduces oxygen carrying capacity of blood?

A
Carbon monoxide

B
Carbon dioxide

C
Hydrogen peroxide

D
Nitrogen dioxide
Question 16
1 / -0

What is smog?

A
Fog + carbon monoxide

B
Smoke + carbon dioxide

C
Carbon dioxide + Carbon monoxide

D
Fog + smoke
Question 17
1 / -0

Which of the following gases are responsible for producing acid rain?

A
Carbon dioxide and carbon monoxide

B
Carbon dioxide and sulphur dioxide

C
Sulphur dioxide and Nitrogen dioxide

D
Nitrogen dioxide and carbon dioxide
Question 18
1 / -0

Which of the following states is/are present at the triple point of water?

A
Solid

B
Liquid

C
Gaseous

D
All of these
Question 19
1 / -0

The substances that dissolve readily in water are known as _______.

A
Acidic substances

B
Basic substances

C
Hydrophilic substances

D
Hydrophobic substances
Question 20
1 / -0

Electrolysis of water results in the formation of

A
2H and 1 oxygen atoms

B
H₂ and O₂

C
H⁺ and OH^-

D
H₂ and OH^-