Environmental Chemistry Test

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Environmental Chemistry Test - 10

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following has highest concentration of PAN?

A
Smoke

B
Ozone

C
Photochemical smog

D
Reducing smog

Solution

The main component of photochemical smog is peroxyacetyl nitrate, (PAN). The other components are ozone, nitric oxide, acrolein and formaldehyde.
Question 2
4 / -1

Which of the following is not a greenhouse gas?

A
Carbon dioxide

B
Water vapours

C
Methane

D
Oxygen

Solution

Among all the given gases, oxygen is not a green house gas. Rest carbon dioxide, water vapours and methane are greenhouse gases.
Question 3
4 / -1

Living in the atmosphere of CO is dangerous, because it

A
combines with O, present inside to form CO₂

B
reduces organic matter of tissues

C
combines with haemoglobin and makes it incapable to absorb oxygen

D
dries up the blood.

Solution

Carbon monoxide combines with haemoglobin of blood to form a complex called carboxy-haemoglobin. Formation of this complex makes the haemoglobin incapable of oxygen transport. Due to which there will be oxygen deficiency in the blood.
Question 4
4 / -1

Which of the following is not a green house gas?

A
Hydrogen

B
Carbon dioxide

C
Methane

D
Nitrous oxide or N₂O

Solution

Greenhouse gas is a gas that contributes to the greenhouse effect by absorbing infrared radiation. It includes carbondioxide, methane, water vapour, nitrous oxide, chloroflurocarbons and ozone. Therefore, among all the options given hydrogen is not a greenhouse gas.
Question 5
4 / -1

White lung cancer is caused by :

A
asbestos

B
silica

C
paper

D
textiles

Solution

White lung cancer is caused by asbestos .
Question 6
4 / -1

Green chemistry means such reactions which

A
are related to the depletion of ozone layer

B
study the reactions in plants

C
produce colour during reactions

D
reduce the use and production of hazardous chemicals.

Solution

Green chemistry is the approach in chemical sciences that efficiently uses renewable raw materials, eliminating waste and avoiding the use of toxic and hazardous reagents and solvents in the manufacture and application of chemical products. Green chemistry takes into account the environmental impact.
Question 7
4 / -1

The radiant energy from the sun is due to :

A
combustion

B
chemical reaction

C
nuclear fusion

D
nuclear fission

Solution

The radiant energy from the sun is due to nuclear fusion .
Question 8
4 / -1

Which of the following chemicals are used to manufacture methyl isocyanate that caused "Bhopal Tragedy"?

(i) methylamine

(ii) phosgene

(iii) phosphine

(iv) dimethylamine

A
(i) and (iii)

B
(iii) and (iv)

C
(i) and (ii)

D
(ii) and (iv)

Solution

Methylamine and phosgene helps in the preparation of methyl isocyanate.
Question 9
4 / -1

Ozone in stratosphere is depleted by

A
CF₂Cl₂

B
C₇F₁₆

C
C₆H₆Cl₆

D
C₆F₆

Solution

Ozone depletion is caused by a number of pollutants like chlorofluorocarbons (14% of total depiction), nitrogen oxides. sulphur oxides, CCl_4, Cl₂ etc. Maximum ozone depleting potential or OPD is of chlorofluorocarbons (CF₂Cl₂) due to release of chlorine by it. A single chlorine atom converts 1 lakh molecules of ozone to oxygen.
Question 10
4 / -1

Which of the following is not a green house gas?

A
Carbon dioxide

B
Water vapour

C
Methane

D
Oxygen

Solution

Except oxygen, rest are the examples of green house gases.

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Environmental Chemistry Test - 10

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Environmental Chemistry Test - 10

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SHARING IS CARING

Question 1

Smoke

Ozone

Photochemical smog

Reducing smog

Solution

Question 2

Carbon dioxide

Water vapours

Methane

Oxygen

Solution

Question 3

combines with O, present inside to form CO2

reduces organic matter of tissues

combines with haemoglobin and makes it incapable to absorb oxygen

dries up the blood.

Solution

Question 4

Hydrogen

Carbon dioxide

Methane

Nitrous oxide or N2O

Solution

Question 5

asbestos

silica

paper

textiles

Solution

Question 6

are related to the depletion of ozone layer

study the reactions in plants

produce colour during reactions

reduce the use and production of hazardous chemicals.

Solution

Question 7

combustion

chemical reaction

nuclear fusion

nuclear fission

Solution

Question 8

(i) and (iii)

(iii) and (iv)

(i) and (ii)

(ii) and (iv)

Solution

Question 9

CF2Cl2

C7F16

C6H6Cl6

C6F6

Solution

Question 10

Carbon dioxide

Water vapour

Methane

Oxygen

Solution

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combines with O, present inside to form CO₂

Nitrous oxide or N₂O

CF₂Cl₂

C₇F₁₆

C₆H₆Cl₆

C₆F₆