Environmental Issues Test

Result

Environmental Issues Test - 38

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

Select the correct option among the following.

A
Cooking oil and fats should be thrown down the drain.

B
Chemicals like paints, solvents, insecticides, motor oil, medicines may kill microbes that help purify water.

C
Used tea leaves, solid food remains, soft toys, cotton, sanitary towels etc. should not be thrown in the dustbin.

D
None of the above
Question 2
1 / -0

Which of the following is not a water pollutant?

A
Metal nitrates

B
Sewage

C
Oxygen

D
Human excreta

Solution

Oxygen is a constituent of water ($$H_2O$$). Others-metal nitrates, sewage, human excrete are organic wastes and inorganic waste that pollutes water bodies which makes it difficult for water animals to live underwater, whereas oxygen is helpful for the underwater organisms.
Question 3
1 / -0

The factor responsible for depletion of ozone layer is

A
Excessive use of automobiles

B
Excessive industrial units

C
Excessive use of man made compounds containing chlorine and fluorine

D
Excessive deforestation

Solution

Chlorofluorocarbon compounds are released from automobiles, refrigerators, etc. These compounds cause an increase in atmospheric temperature causing global warming.
So, option C " Excessive use of man-made compounds containing chlorine and fluorine" is the correct answer.
Question 4
1 / -0

UV light radiation cause

A
Formation of pyrimidines

B
Photodynamic action

C
Breakage of hydrogen bonds in DNA

D
Protein denaturation

Solution

The UV radiations can cause mutation in the cells by altering the DNA. These are ionising radiations which can damage the structure of the DNA molecule. The UV rays can result in the formation of thymine dimers or split the hydrogen bonding. This results in distortion in the structure of DNA and the cell dies due to malfunctioning of the genetic material.
Thus, the correct answer is option C.
Question 5
1 / -0

Which component of the cooked food should not be disposed off into the drain?

A
Dry vegetables

B
Oil/ghee

C
Supernatent liquid

D
None of the above

Solution

Putting oil down the sink could lead to the build-up of a huge 'fat burg'. 'Fat burg' is the build-up of fat which can damage sewers and cause flooding.
Question 6
1 / -0

Overall the contribution of carbon dioxide to global warming is

A
20%

B
14%

C
6%

D
60%

Solution

Carbon dioxide is a greenhouse gas. It is released constantly by burning of fuels in industries, automobiles etc. It causes a severe increase in atmospheric temperature and leads to global warming. It contributes nearly 60% of global warming.
So the correct answer is option "D".
Question 7
1 / -0

Which gas is released by improper or incomplete combustion and are generally emitted from vehicles?

A
$$SO_2$$

B
$$CO$$

C
$$NO$$

D
$$CO_2$$

Solution

Carbon Monoxide is formed by improper or incomplete combustion and is generally emitted from vehicles.
Question 8
1 / -0

What are the effects of air pollution?
i. greenhouse effect
ii. smog
iii. respiratory diseases
iv. acid rain

A
i,ii, iii

B
ii, iii, iv

C
iii, iv, i

D
i, ii, iii, iv

Solution

Effects of air pollution are the greenhouse effect, smog, deforestation and acid rains. It also causes different respiratory diseases like asthma.
Question 9
1 / -0

Causes of air pollution are:
i. Exhaust from automobiles
ii. Exhaust from factories and power plant
iii. CFCs
iv. Polythene

A
i, ii, iii

B
ii, iii, iv

C
iii, iv, i

D
i, ii, iv
Solution
Causes of air pollution are
Exhaust from automobiles
Exhaust from factories
Power plant
CFCs(chloro fluoro carbons).
Polythene causes soil pollution.
Question 10
1 / -0

Global warming is a direct result of:

A
an increased imbalance of gases in the atmosphere.

B
a decreased imbalance of gases in the atmosphere.

C
an increased balance of gases in the atmosphere.

D
none of these

Solution

Global warming is a direct result of the increased imbalance of gases in the atmosphere.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Environmental Issues Test - 38

Result

Environmental Issues Test - 38

Score

-

Rank

-

SHARING IS CARING

Question 1

Cooking oil and fats should be thrown down the drain.

Chemicals like paints, solvents, insecticides, motor oil, medicines may kill microbes that help purify water.

Used tea leaves, solid food remains, soft toys, cotton, sanitary towels etc. should not be thrown in the dustbin.

None of the above

Question 2

Metal nitrates

Sewage

Oxygen

Human excreta

Solution

Question 3

Excessive use of automobiles

Excessive industrial units

Excessive use of man made compounds containing chlorine and fluorine

Excessive deforestation

Solution

Question 4

Formation of pyrimidines

Photodynamic action

Breakage of hydrogen bonds in DNA

Protein denaturation

Solution

Question 5

Dry vegetables

Oil/ghee

Supernatent liquid

None of the above

Solution

Question 6

20%

14%

6%

60%

Solution

Question 7

$$SO_2$$

$$CO$$

$$NO$$

$$CO_2$$

Solution

Question 8

i,ii, iii

ii, iii, iv

iii, iv, i

i, ii, iii, iv

Solution

Question 9

i, ii, iii

ii, iii, iv

iii, iv, i

i, ii, iv

Solution

Question 10

an increased imbalance of gases in the atmosphere.

a decreased imbalance of gases in the atmosphere.

an increased balance of gases in the atmosphere.

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.