Environmental Issues Test

Result

Environmental Issues Test - 46

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

Which of the following diseases is related to cadmium pollution?

A
Minamata

B
Pneumoconiosis

C
Anaemia

D
Itai-itai

Solution

Itai-itai disease was caused by cadmium poisoning due to mining in Toyama Prefecture. The term was coined by locals for the severe pains victims felt in the spine and joints. One of the main effects of cadmium poisoning is weak and brittle bones. Other complications include coughing, anemia, and kidney failure, leading to death.
Therefore, the correct answer is option D.
Question 2
1 / -0

Which one of the following is mainly responsible for depletion of ozone layer?

A
Methane

B
Carbon dioxide

C
Water

D
Chlorofluorocarbons

Solution

The ozone layer present in the stratosphere acts as a protective shield. It saves the earth from the harmful ultraviolet rays of the sun. The compounds containing CFCs (chlorofluorocarbons) deplets ozone layer when these compounds react with ozone in the presence of ultraviolet rays to form oxygen molecule.
Chlorofluorocarbons are released into the atmosphere due to cleaning agents. Coolants in refrigerators and air conditioners, aerosol spray cans etc. Hence, the correct answer is option D.
Question 3
1 / -0

Biological Oxygen Demand (BOD) of sewage water is related to

A
Presence of detergents

B
Presence of fertilizers

C
Presence of inorganic pollutants

D
Presence of organic pollutants

Solution

Biological oxygen demand is the amount of dissolved oxygen available for the organisms to breakdown the organic pollutants. Hence, the correct option is D.
Question 4
1 / -0

Which of the following set represents greenhouse gases?

A
$$N_2$$, C$$H_4, CO_2, N_2O$$

B
$$CO_2, CH_4, N_2, O_2$$

C
$$CO_2, CH_4, N_2O, O_3$$

D
$$CO_2, CFC, N_2, O_2$$

Solution

Earths surface re-emits heat in the form of infrared radiation but part of this does not escape and is absorbed by greenhouse gases. The problem we now face is that human activities – particularly burning fossil fuels (coal, oil and natural gas), agriculture and land clearing – are increasing the concentrations of greenhouse gases. This is the enhanced greenhouse effect, which is contributing to the warming of the Earth. The gases $$CO_2, CH_4, N_2O, O_3$$ are commonly known as greenhouse gases because they are responsible for the greenhouse effect which leads to global warming.
So, the correct answer is '$$CO_2, CH_4, N_2O, O_3$$'.
Question 5
1 / -0

The global mean temperature appears to be rising, at least in the short term, has occurred so may times in the past. An inevitable result of this change is

A
First frost dates will be delayed

B
Birds will migrate shorter distances

C
Oxygen levels in the oceans will rise

D
Available fertile lands will decrease as desertification increase

E
Animal life will be reduced worldwide

Solution

The first frost occurs under a clear sky and calm winds. On overcast nights, cloud cover acts like a blanket on the earth, trapping radiant heat from the ground. The wind mixes the air thus trapped in the atmosphere creating a uniform temperature. But a global mean temperature rise will delay the first frost. Thus the correct answer is option A.
Question 6
1 / -0

Increased $$CO_2$$ concentration in the atmosphere leads to

A
Global warming

B
Eutrophication of lakes

C
Depletion of the ozone layer

D
Magnification in the food chain

E
Acid rain

Solution

Global warming is caused by increased atmospheric concentration of $$CO_2$$ and other green house gases. As greenhouse gases absorbs the solar energy when radiation is reflected back to the atmosphere from earth's surface and increase the earth's temperature. Eutrophication refers to the presence of excess organic compounds in water. Depletion of the ozone layer is caused by the excess release of chlorine and bromine-containing the chemical in the atmosphere. Acid rain is the result of increased sulphur and nitrogen oxide levels in the atmosphere. Slow metabolism and excretion of pesticides causes their accumulation in fat tissues of organisms and is referred to as biomagnifications. The correct answer is A.
Question 7
1 / -0

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

A
Water vapour

B
Carbon dioxide

C
Methane

D
Oxygen

Solution

A greenhouse gas is any gaseous compound in the atmosphere that is capable of absorbing infrared radiation, thereby trapping and holding heat in the atmosphere. By increasing the heat in the atmosphere, greenhouse gases are responsible for the greenhouse effect, which ultimately leads to global warming. The most significant greenhouse gases are water vapor ($$H_2O$$), carbon dioxide ($$CO_2$$), methane ($$CH_4$$) and nitrous oxide ($$N_2O$$), according to the Environmental Protection Agency (EPA).
But oxygen is not capable to absorb infrared radiation and thus do not cause green house effect. Therefore, the correct answer is option D.
Question 8
1 / -0

Chlorofluorocarbons cause

A
Global warming

B
Eutrophication of lakes

C
Depletion of the ozone layer

D
Magnification in the food chain

E
Acid rain

Solution

Chlorofluorocarbons (CFC) also known as freons which cause a destruction of ozone layer found in the stratospheric layer. The ozone layer in the atmosphere prevents the harmful UV rays from reaching the earth surface. When this ozone layer gets depleted, harmful UV rays causes skin cancer.
Question 9
1 / -0

Which of the following is the result of use of chlorofluorocarbons?

A
Global warming

B
Eutrophication of lates

C
Depletion of the ozone layer

D
Magnification in the food chain

E
Acid rain

Solution

A chlorofluorocarbon (CFC) is composed of carbon, chlorine, and fluorine. This is used in refrigerants, propellants, and solvents. The chlorine atoms are released due to splitting of CFC by ultravoilet radiation.
So, the correct answer is option C.
Question 10
1 / -0

The diagram given shows the green house effect. Which of the following would have been in the absence of greenhouse effect in the atmosphere?

A
Pollution will increase

B
Earth's surface temerature will decrease

C
Earth surface temperature will increase

D
Earth's surface temperature remains the same

Solution

When carbon dioxide and other air pollutants are collected in the atmosphere they absorb sunlight that has bounced from the earth’s surface. This leads to an increase in the earth's average surface temperature and is called global warming. When there is no effect of the global warming, the temperature of the Earth's surface will decrease.
Thus, the correct answer is option B.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Environmental Issues Test - 46

Result

Environmental Issues Test - 46

Score

-

Rank

-

SHARING IS CARING

Question 1

Minamata

Pneumoconiosis

Anaemia

Itai-itai

Solution

Question 2

Methane

Carbon dioxide

Water

Chlorofluorocarbons

Solution

Question 3

Presence of detergents

Presence of fertilizers

Presence of inorganic pollutants

Presence of organic pollutants

Solution

Question 4

$$N_2$$, C$$H_4, CO_2, N_2O$$

$$CO_2, CH_4, N_2, O_2$$

$$CO_2, CH_4, N_2O, O_3$$

$$CO_2, CFC, N_2, O_2$$

Solution

Question 5

First frost dates will be delayed

Birds will migrate shorter distances

Oxygen levels in the oceans will rise

Available fertile lands will decrease as desertification increase

Animal life will be reduced worldwide

Solution

Question 6

Global warming

Eutrophication of lakes

Depletion of the ozone layer

Magnification in the food chain

Acid rain

Solution

Question 7

Water vapour

Carbon dioxide

Methane

Oxygen

Solution

Question 8

Global warming

Eutrophication of lakes

Depletion of the ozone layer

Magnification in the food chain

Acid rain

Solution

Question 9

Global warming

Eutrophication of lates

Depletion of the ozone layer

Magnification in the food chain

Acid rain

Solution

Question 10

Pollution will increase

Earth's surface temerature will decrease

Earth surface temperature will increase

Earth's surface temperature remains the same

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday