Environmental Chemistry Test

Question 1
1 / -0

The pair of gases responsible for acid rain are:

A
$${H}_{2}, {O}_{3}$$

B
$$C{H}_{4}, {O}_{3}$$

C
$$N{O}_{2}, S{O}_{2}$$

D
$$CO, C{H}_{4}$$

Question 2

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 waterfalls, 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.
If the pH of the soil was 7.0, then

The fungi would survive but the plant would be harmed.

The fungi would be harmed but the plant would survive.

The fungi would be slightly harmed and the plant would be slightly harmed.

Both the fungi and plant would survive.

Neither the fungi nor the plant would be harmed.

Question 3
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 sulfur into the atmosphere. Sunlight and rain bring about chemical reactions that convert these compounds into nitric acid and sulfur 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.
Fungi are classified as

A
Prokaryotic decomposers

B
Eukaryotic producers

C
Eukaryotic decomposers

D
Eukaryotic autotrophs

E
Prokaryotic consumers

Question 4
1 / -0

Acid rain is produced when rain mixes with chemicals such as sulfur dioxide in the air. This may result in

A
Lowering the pH in ponds, thus limiting the survival of many organisms

B
Lowering the pH in ponds, thus affecting water temperature

C
Raising the pH in ponds, thus encouraging the growth of organisms

D
Raising the pH in ponds, thus limiting animal development

E
Depleting atmospheric carbon dioxide available for photosynthesis

Question 5
1 / -0

Ozone depletion is occuring widely in the stratosphere, it leads to ozone hole caused mainly due to

A
Ethylene

B
Methane

C
CFCs

D
$$CO_{2}$$

Question 6
1 / -0

Snow blindness is caused due to

A
Ozone hole

B
Nuclear winter

C
Acid rain

D
Green house effect

Question 7
1 / -0

Match the Column I and Column II and choose the correct code given below.
Column I Column II
(A) Peroxyacetyl nitrile (i) Waste incineration
(B) Indigo (ii) Vat dye
(C) IR active molecules (iii) Global warming
(D) Dioxins (iv) Photochemical smog

A
A-(iv); B-(ii); C-(iii); D-(i)

B
A-(i); B-(ii); C-(iv); D-(iii)

C
A-(ii); B-(i); C-(iv); D-(iii)

D
A-(iv); B-(i); C-(iii); D-(ii)

Question 8
1 / -0

Acid rain is due to increase in atmospheric concentration of

A
Ozone

B
CO$$_2$$ and CO

C
SO$$_3$$ and CO

D
SO$$_2$$ and Nitrogen oxide

Question 9
1 / -0

Part of ozone is destroyed over poles during

A
Polar spring

B
Winter

C
Summer

D
Period of snow fall

Question 10
1 / -0

Green chemistry means such reactions which:

A
produce colour during reactions

B
reduce the use and production of hazardous chemicals

C
are related to the depletion of ozone layer

D
study the reactions in plant

Submit Test

Column I	Column II
(A) Peroxyacetyl nitrile	(i) Waste incineration
(B) Indigo	(ii) Vat dye
(C) IR active molecules	(iii) Global warming
(D) Dioxins	(iv) Photochemical smog

Environmental C...

Question 1

$${H}_{2}, {O}_{3}$$

$$C{H}_{4}, {O}_{3}$$

$$N{O}_{2}, S{O}_{2}$$

$$CO, C{H}_{4}$$

Question 2

The fungi would survive but the plant would be harmed.

The fungi would be harmed but the plant would survive.

The fungi would be slightly harmed and the plant would be slightly harmed.

Both the fungi and plant would survive.

Neither the fungi nor the plant would be harmed.

Question 3

Prokaryotic decomposers

Eukaryotic producers

Eukaryotic decomposers

Eukaryotic autotrophs

Prokaryotic consumers

Question 4

Lowering the pH in ponds, thus limiting the survival of many organisms

Lowering the pH in ponds, thus affecting water temperature

Raising the pH in ponds, thus encouraging the growth of organisms

Raising the pH in ponds, thus limiting animal development

Depleting atmospheric carbon dioxide available for photosynthesis

Question 5

Ethylene

Methane

CFCs

$$CO_{2}$$

Question 6

Ozone hole

Nuclear winter

Acid rain

Green house effect

Question 7

A-(iv); B-(ii); C-(iii); D-(i)

A-(i); B-(ii); C-(iv); D-(iii)

A-(ii); B-(i); C-(iv); D-(iii)

A-(iv); B-(i); C-(iii); D-(ii)

Question 8

Ozone

CO$$_2$$ and CO

SO$$_3$$ and CO

SO$$_2$$ and Nitrogen oxide

Question 9

Polar spring

Winter

Summer

Period of snow fall

Question 10

produce colour during reactions

reduce the use and production of hazardous chemicals

are related to the depletion of ozone layer

study the reactions in plant

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