Pollution of Air and Water Test

Result

Pollution of Air and Water Test - 41

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

What is the reason of increase in temperature?

A
Acid rain

B
Nuclear accidents

C
Greenhouse effect

D
Both A nad B

Solution

The atmosphere today contains more greenhouse gas molecules, so more of the infrared energy emitted by the surface ends up being absorbed by the atmosphere. Since some of the extra energy from a warmer atmosphere radiates back down to the surface, Earth's surface temperature rises.
Hence, option D is correct.
Question 2
1 / -0

Which of the following is not a greenhouse gas?

A
$${CO}_{2}$$

B
$${CH}_{4}$$

C
$$CO{Cl}_{2}$$

D
$${N}_{2}O$$

Solution

Greenhouse gases that occur both naturally and from human activities include water vapor, carbon dioxide $$(CO_2)$$, methane $$(CH_4)$$, nitrous oxide $$(N_2O)$$, and ozone $$(O_3)$$.
So, $$COCl_2$$ is not a greenhouse gas.
Option C is correct.
Question 3
1 / -0

Identify the correct statement.

A
Non-conventional source of energy more pollution

B
Ozone is harmless gas present in the atmosphere

C
Chlorofluorocarbons break down to chlorine atoms by ultraviolet radiation

D
Trees do not help in decreasing sound pollution.

Solution

Chlorine atoms are released in the atmosphere by chloroflurocarbons due to dissociation by $$UV$$ radiations. Hence option (C) is correct.
Question 4
1 / -0

Sewage containing organic waste should not be disposed in water bodies because it causes major water pollution. Fishes in such a polluted water die because of :

A
large number of mosquitoes

B
increase in the amount of dissolved oxygen

C
decrease in the amount of dissolved oxygen in water

D
clogging of gills by mud

Solution

Sewage containing organic waste should not be disposed of in water bodies because it causes water pollution. Microorganisms in water try to decompose the untreated sewage. While doing so they use oxygen and, so the oxygen level in such water decreases. Thus fish in such polluted water die, because of a decrease in the amount of dissolved oxygen in the water
Question 5
1 / -0

Fish die in water bodies polluted by sewage due to :

A
pathogens

B
reduction in oxygen

C
foul smell

D
none of these

Solution

Reduction in dissolved oxygen.
When sewage is drained into water bodies it results in a reduction of oxygen, this is because oxygen is get used in the decomposition of organic matter of the sewage. Due to this effect oxygen concentration falls below the level at which fish can survive and results in fish die.
Hence, option $$B$$ is correct.
Question 6
1 / -0

Global warming may result in :

A
flood

B
decrease in temperature of the earth's surface

C
Increase in temperature of earth's surface.

D
Both $$A$$ and $$C$$

Solution

Global warming is the rise or increase in temperature of earth's surface due to greenhouse gases. This global warming effect also leads to increase in sea level which ultimately leads to floods in coastal area.
Hence, option $$D$$ is correct.
Question 7
1 / -0

Identify the gas "odourless, colourless, heavier than air, supports combustion".

A
Nitrogen

B
Oxygen

C
Carbondioxide

D
Water vapour

Solution

Oxygen is a colorless, odorless, and tasteless gas that supports life and combustion and heavier than air.
hence the correct answer is B
Question 8
1 / -0

Which of the following gases is not a green house gas ?

A
$$CO$$

B
$$CO_2$$

C
$$CH_{4} $$

D
$$H_{2}O$$ vapour

Solution

CO is not a greenhouse gas as it does not absorb IR energy strongly. Also, it does not increase the temperature of the earth's atmosphere.
Question 9
1 / -0

Which one of the following has the major part of air?

A
Nitrogen

B
Oxygen

C
Carbondioxide

D
Helium

Solution

The air contains highest $$\%$$ of Nitrogen gas ( $$78\ \%$$). Hence, option $$A$$ is correct
Question 10
1 / -0

Air is a ______.

A
Mixture

B
Compound

C
Pure substance

D
None of these

Solution

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Pollution of Air and Water Test - 41

Result

Pollution of Air and Water Test - 41

Score

-

Rank

-

SHARING IS CARING

Question 1

Acid rain

Nuclear accidents

Greenhouse effect

Both A nad B

Solution

Question 2

$${CO}_{2}$$

$${CH}_{4}$$

$$CO{Cl}_{2}$$

$${N}_{2}O$$

Solution

Question 3

Non-conventional source of energy more pollution

Ozone is harmless gas present in the atmosphere

Chlorofluorocarbons break down to chlorine atoms by ultraviolet radiation

Trees do not help in decreasing sound pollution.

Solution

Question 4

large number of mosquitoes

increase in the amount of dissolved oxygen

decrease in the amount of dissolved oxygen in water

clogging of gills by mud

Solution

Question 5

pathogens

reduction in oxygen

foul smell

none of these

Solution

Question 6

flood

decrease in temperature of the earth's surface

Increase in temperature of earth's surface.

Both $$A$$ and $$C$$

Solution

Question 7

Nitrogen

Oxygen

Carbondioxide

Water vapour

Solution

Question 8

$$CO$$

$$CO_2$$

$$CH_{4} $$

$$H_{2}O$$ vapour

Solution

Question 9

Nitrogen

Oxygen

Carbondioxide

Helium

Solution

Question 10

Mixture

Compound

Pure substance

None of these

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.