Environmental Chemistry Test

Question 1
1 / -0

Cement factory laborer's are prone to?

A
Leukemia

B
Bone-marrow diseases

C
Asbestosis

D
Cytosilicosis

Question 2
1 / -0

The major drawbacks of DDT as a pesticide is that:-

A
Organisms at once develop resistance to it

B
It is significantly less effective than other pesticides

C
Its cost of production is high

D
It is not readily and rapidly degraded in nature

Question 3
1 / -0

Smog is _____

A
Smkoe

B
Fog

C
Both A and B

D
None of these

Question 4
1 / -0

Smog is formed when fog is mixed with _______

A
Sulphur

B
Mercury

C
Smoke

D
Snow flakes

Question 5
1 / -0

In the environment, ozone is known for its

A
Harmful effects

B
Useful effects

C
Both A and B

D
Inert nature

Question 6
1 / -0

The consumption of pesticides used to kill pests can cause ______________ in some cases.

A
Cancer

B
Death

C
Paralysis

D
All of the above

Question 7

1 / -0

Read the passage and answer the following questions.

Acid rain is formed after the burning of fossil fuels releases compounds containing nitrogen and sulphur into the atmosphere. Sunlight and rain bring about chemical reactions that convert these compounds into nitric acid and sulphur dioxide, which combine with water droplets to form acid rain. Acid rain typically has a pH of approximately 5.5. "The higher acidity of soil and water affects many living organisms adversely. As the pH of lake water falls, fish become ill and die. Table 1 shows the effects of pH on the size of adult fish.

pH of lake	Average length of fish (cm)	Average mass of fish (g)
7.5	30 cm	454 g
7.0	28 cm	450 g
6.5	29 cm	453 g
6.0	25 cm	401 g
5.5	20 cm	288 g
5.0	17 cm	127 g
4.5	all fish died	all fish died

Mycorrhizal fungi, which form a mutualistic association with many plant roots, are particularly sensitive to the effects of acid rain. These fungi facilitate the absorption of water and nutrients by the plants; in turn, the plants provide sugars and amino acids without which the fungi could not survive.
What might be the best strategy to prevent the death of the fishes?

Stock the lakes with bigger fish so that they can resist the effects of the acid better

Reduce the amount of fossil fuels that are burned

Supply plants with excess phosphorus and water

Supply fungi with excess sugars and amino acids

Add alkalines to soil and water to neutralize the acid

Question 8
1 / -0

$$\displaystyle { SO }_{ 2 }$$ in the air causes

A
Global warming

B
Eutrophication of lakes

C
Depletion of the ozone layer

D
Magnification in the food chain

E
Acid rain

Question 9
1 / -0

The pair of chemicals that maintain heat balance in troposphere are:

A
$$CO_2, O_2$$

B
$$N_2, O_2$$

C
$$O^{\oplus}, O_3$$

D
$$H_2O, NO^{\oplus}$$

Question 10
1 / -0

Which of the following gases cause acid rain?

A
Carbon monoxide and carbon dioxide

B
Sulphur dioxide and oxides of nitrogen

C
Oxides of nitrogen and carbon dioxide

D
None of these

Submit Test

Environmental C...

Question 1

Leukemia

Bone-marrow diseases

Asbestosis

Cytosilicosis

Question 2

Organisms at once develop resistance to it

It is significantly less effective than other pesticides

Its cost of production is high

It is not readily and rapidly degraded in nature

Question 3

Smkoe

Fog

Both A and B

None of these

Question 4

Sulphur

Mercury

Smoke

Snow flakes

Question 5

Harmful effects

Useful effects

Both A and B

Inert nature

Question 6

Cancer

Death

Paralysis

All of the above

Question 7

Stock the lakes with bigger fish so that they can resist the effects of the acid better

Reduce the amount of fossil fuels that are burned

Supply plants with excess phosphorus and water

Supply fungi with excess sugars and amino acids

Add alkalines to soil and water to neutralize the acid

Question 8

Global warming

Eutrophication of lakes

Depletion of the ozone layer

Magnification in the food chain

Acid rain

Question 9

$$CO_2, O_2$$

$$N_2, O_2$$

$$O^{\oplus}, O_3$$

$$H_2O, NO^{\oplus}$$

Question 10

Carbon monoxide and carbon dioxide

Sulphur dioxide and oxides of nitrogen

Oxides of nitrogen and carbon dioxide

None of these

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