Environmental Issues Test

Result

Environmental Issues Test - 63

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

High concentration of greenhouse gases has resulted in maximum rise of atmospheric temperature in

A
Tropic region

B
Middle latitude

C
Polar region

D
Temperate region

Solution

Increases in the level of greenhouse gases has led to considerable heating of earth leading to global warming. During the past century, the temperature of earth has increased by $$ 0.6 $$, most of it during the last three decades. Rise in temperature is slight in tropics, moderate in middle latitudes and maximum in polar regions. It will led to melting of polar ice caps as well as of other places like the Himalayan snow caps.
So, the correct answer is 'Polar region'.
Question 2
1 / -0

Ozone depletion is occurring widely in ______________.

A
Troposphere

B
Stratosphere

C
Ionosphere

D
All of these

Solution

Ozone depletion is occurring widely in the stratosphere, particularly marked over the Antarctic region.
So, The correct answer is (B)- Stratosphere.
Question 3
1 / -0

Increasing skin cancer and high mutation rate are the result of _______________.

A
Ozone depletion

B
Acid rain

C
$$CO$$ pollution

D
$$ { CO }_{ 2 } $$ pollution

Solution

Ozone depletion occurs widely in the stratosphere due to an increased amount of $$ { CFC }{ s } $$ which causes various types of skin cancer and mutations.
So, The correct answer is (A)- Ozone depletion.
Question 4
1 / -0

Phosphate pollution is brought about by

A
Phosphate rocks

B
Automobile exhausts

C
Sewage and phosphate rocks

D
Sewage and agricultural fertilisers

Solution

The sources of phosphate pollution are sewage treatment plants, phosphate fertilisers used in agricultural fields, etc.
Question 5
1 / -0

Which of the following statements is correct?

A
There are working 'EcoSan' toilets in many areas of Kerala and Sri-Lanka

B
Municipal solid wastes are wastes from homes, offices, stores, schools, hospitals, etc. that are collected and disposed by the municipality

C
In a sanitary landfill, wastes are dumped in a depression or trench after compaction and covered with dirt everyday

D
All of these

Solution

EcoSan toilet has emerged as a sustainable concept and is prevalent in Delhi, Kerala, and Mumbai for footpath and slum dwellers. These are solid wastes from home, offices, stores, schools, hospitals, hotels etc. These domestic solid wastes one usually, thrown in municipal garbage collecting cans. a depression or trench is made in the ground and wastes are dumped into it after compaction and covered with dirt every day. the above statements are correct.

So, the correct answer is 'All of these'.
Question 6
1 / -0

Which of the following is correct regarding 'El Nino' effect?

A
Temperature rise leads to odd climatic changes

B
Cutting down the use of fossil fuels

C
Planting more trees

D
Slowing down the growth of human population

Solution

The rise in temperature due to global warming is leading to deleterious changes in the environment and resulting in odd climatic changes like EL Nino effect. El Nino effect is the abnormal warming of surface ocean water. It affects the weather in large parts of the world. Moisture carrying capacity of air will increase. Pattern of air-mass movement will change. Precipitation will increase at higher latitudes both in summer and winter and in southern as well as Eastern Asia in summer. Frequency of droughts and floods will increase. Threat to human health will increase in tropical and subtropical countries due to changed ranges of disease vectors and water borne pathogens.
So, the correct answer is 'Temperature rise leads to odd climatic changes'.
Question 7
1 / -0

Which of the following are the correct approaches to reduce global warming ?
(i) Use of fossil fuels
(ii) Improving efficiency of energy usage
(iii) Afforestation
(iv) Increasing growth of human population

A
(i) and (ii)

B
(ii) and (iii)

C
(iii) and (iv)

D
(i), (ii) and (iii)

Solution

To reduce global warming following measures must be taken:
(i) cutting down the use of fossil fuel
(ii) Improving efficiency of energy usage
(iii) Reducing deforestation
(iv) Planting trees and slowing down the growth of human population.
Question 8
1 / -0

Read the following statements and select the correct option.

Statement 1: Ozone layer present in the stratosphere protects the living organisms from harmful UV rays coming from the sun by absorbing nearly all of them.

Statement 2: Ozone formed in the troposphere by photochemical reactions as a result of human activities which is harmful to all living organisms.

A
Both statements 1 and 2 are correct.

B
Statement 1 is correct but statement 2 is incorrect.

C
Statement 1 is incorrect but statement 2 is correct.

D
Both statements 1 and 2 are incorrect.

Solution

'Good ozone' is found in the upper part of the atmosphere called the stratosphere and it act as a shield by absorbing ultraviolet radiations from the sun. UV rays are, highly injurious to living organisms. 'Bad ozone' is formed in the lower part of atmosphere called troposphere and it harms plants and animals.
Question 9
1 / -0

The major ozone depleting substance out of the following is _____________.

A
$$ { CFC }{ s } $$

B
$$ { O }_{ 2 } $$

C
Nitrogen

D
All of these

Solution

Ozone-depleting substances (ODS) are substances that react with ozone present in the stratosphere and destroy the same. The major Ozone-depleting substances are chlorofluorocarbons (14% of total depletion), nitrogen oxides (3.5% depletion), sulphur dioxide, halon, carbon tetrachloride, methyl chloroform, chlorine, etc.
Question 10
1 / -0

The graph given below represents changes in different ecological parameters due to effluent mixing in a stream. The three lines A, B and C represent

A
A : oxygen concentration, B : biological $$ { O }_{ 2 } $$ demand, c : pollution resistant species

B
A : pollutant, B : aerobic process, c : anaerobic process

C
A : oxygen concentration, b : $$ { CO }_{ 2 } $$ concentration c : temperature

D
A : phosphate concentration, B : nitrate concentration, C : rate of photosynthesis.

Solution

Effluent discharge mixing into a river will result in rise of BOD because decomposer organisms consume a lot of oxygen. If sewage quantity is large, the whole of dissolved oxygen may be consumed leaving nothing for respiration of fish and other clean water organisms. They, therefore, get killed. However, as sewage is decomposed, there is a gradual rise in dissolved oxygen downstream. Fish and other clean water organisms reappear indicating the recovery of river from sewage pollution. Meanwhile, number of pollution resistant species increases in the stream.
So, the correct answer is 'A : oxygen concentration, B : biological O2 demand, c : pollution resistant species'.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Environmental Issues Test - 63

Result

Environmental Issues Test - 63

Score

-

Rank

-

SHARING IS CARING

Question 1

Tropic region

Middle latitude

Polar region

Temperate region

Solution

Question 2

Troposphere

Stratosphere

Ionosphere

All of these

Solution

Question 3

Ozone depletion

Acid rain

$$CO$$ pollution

$$ { CO }_{ 2 } $$ pollution

Solution

Question 4

Phosphate rocks

Automobile exhausts

Sewage and phosphate rocks

Sewage and agricultural fertilisers

Solution

Question 5

There are working 'EcoSan' toilets in many areas of Kerala and Sri-Lanka

Municipal solid wastes are wastes from homes, offices, stores, schools, hospitals, etc. that are collected and disposed by the municipality

In a sanitary landfill, wastes are dumped in a depression or trench after compaction and covered with dirt everyday

All of these

Solution

Question 6

Temperature rise leads to odd climatic changes

Cutting down the use of fossil fuels

Planting more trees

Slowing down the growth of human population

Solution

Question 7

(i) and (ii)

(ii) and (iii)

(iii) and (iv)

(i), (ii) and (iii)

Solution

Question 8

Both statements 1 and 2 are correct.

Statement 1 is correct but statement 2 is incorrect.

Statement 1 is incorrect but statement 2 is correct.

Both statements 1 and 2 are incorrect.

Solution

Question 9

$$ { CFC }{ s } $$

$$ { O }_{ 2 } $$

Nitrogen

All of these

Solution

Question 10

A : oxygen concentration, B : biological $$ { O }_{ 2 } $$ demand, c : pollution resistant species

A : pollutant, B : aerobic process, c : anaerobic process

A : oxygen concentration, b : $$ { CO }_{ 2 } $$ concentration c : temperature

A : phosphate concentration, B : nitrate concentration, C : rate of photosynthesis.

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.