Environmental Chemistry Test

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Environmental Chemistry Test - 48

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Weekly Quiz Competition

Question 1
1 / -0

Precipitation of water with dissolved acids reach the ground, Such rainfall is called _______________.

A
Acid Rain

B
Convectional rainfall

C
Cyclonic rainfall

D
All of above

Solution

Because of air pollution in industrial areas, various gases get mixed in the air. Different acids are created when the water vapour in the air reacts chemically with these gases. Precipitation of water with dissolved acids reach the ground. Such rainfall is called 'acid rain'.

Question 2

1 / -0

Match the columns and find the correct option.

(a)	Photochemical smog	(i)	Itai-itai disease
(b)	Arsenic pollution	(ii)	Parkinson's disease
(c)	Manganese pollution	(iii)	Black foot disease
(d)	Cadmium pollution	(iv)	Burning of petrol and diesel with oxide of nitrogen

a-iv, b-ii, c-iii, d-i

a-iv, b-iii, c-ii, d-i

a-iv, b-iii, c-i, d-ii

a-iv, b-i, c-ii, d-iii

Solution

Cadmium poisoning can also cause softening of the bones and kidney failure. The cadmium was released into rivers by mining companies in the mountains, which were successfully sued for the damage. High levels of manganese and copper pollution in urban areas are linked to increased risk of Parkinson disease, according to a large-scale analysis of urban pollution and Parkinson’s incidence in the United States. Arsenic poisoning is a medical condition that occurs due to elevated levels of arsenic in the body causes black foot and disease.

So the correct answer is 'a-iv, b-iii, c-ii, d-i'.

Question 3
1 / -0

Which of the following process does maximum destruction of ozone?

A
OH system

B
N$$_2$$O system

C
CFCl$$_2$$ system

D
CF$$_2$$Cl$$_2$$ system

Solution

The depletion potential is roughly equivalent, nitrous oxide could have a more damaging effect because it is much more abundant. Global human emissions of N2O are roughly 10 million tonnes per year, compared to slightly more than 1 million tonnes from all CFCs at the peak of their emissions. The CFCs and N2O are very stable in the troposphere, where they are emitted and are transported to the stratosphere where they release active chemicals that destroy stratospheric ozone through chlorine- or nitrogen oxide–catalyzed processes.
So the correct answer is 'N$$_2$$O system'.
Question 4
1 / -0

BOD refers to the ______________.

A
Bidding of Dermatology

B
Binding of Dirt

C
Biochemical Occupied Date

D
Biochemical Oxygen Demand

Solution

The amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water is called Biochemical Oxygen Demand (BOD). The amount of BOD in the water is the measure of the amount of organic material in the water.
Question 5
1 / -0

Multiple Choice Questions
Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers.

A
Methane

B
Nitrous oxide

C
Ozone

D
Ammonia

Solution

Ozone is a triatomic gas that forms a shield or layer in the stratosphere region of atmosphere. This layer protects the living beings from harmful effects of UV-B rays of 280-320 nm. Depletion of the ozone layer can lead to an increased incidence of skin cancer.
So the correct option is 'ozone'.
Question 6
1 / -0

Which of the following gases related with acid rain?

A
$${ NO }_{ 2 }$$ and $${ CO }_{ 2 }$$

B
$${ CH }_{ 4 }$$ and $${ SO }_{ 2 }$$

C
$${ CO }_{ 2 }$$ and $${ SO }_{ 2 }$$

D
$${ SO }_{ 2 }$$ and $${ NO }_{ 2 }$$

Solution

$${ SO }_{ 2 }$$ and $${ NO }_{ 2 }$$:burning of fossil fuels releases oxides of sulphur and nitrogen, $${ SO }_{ 2 }$$ and $${ NO }_{ 2 }$$ reacts with water and oxygen and other chemicals to form sulphuric acid and nitric acid.
Question 7
1 / -0

Match the columns and find the correct option.
I II
(p)
Pollen grains (i) Photochemical smog
(q) PAN (ii) Particulate pollution
(r) $$CO_2$$ (iii) Global warming
(s) Cadmium (iv) Itai-itai disease

A
p-ii, q-i, r-iii, s-iv

B
p-iv, q-ii, r-i, s-iii

C
p-i, q-ii, r-iii, s-iv

D
p-iii, q-i, r-ii, s-iv

Solution

(p) Pollen grains released from flowers are fine particles, whcih on inhalation cause allergy in some individuals.
(q) PAN(Peroxy acyl nitrates) are chemicals that is a component of photochemical smog(which is formed in density populated cities by reaction of ultraviolet light with nitrogen oxides released from automobiles & industries)
(r) Carbon dioxide is one among the green house gases which when formed in excess, will hold the solar radiation close to earth surface. It will increase the temperature of the earth surface, which results in global warming.
(s) Itai Itai is a disease caused by cadmium poisoning, which occurs by the consumption of water bodies from the mining industry in Japan in early $$20^{th}$$ century. This distance severely affects bones, joints & kidneys.
Question 8
1 / -0

How does acid precipitation (acid rain) affect plants?

A
It releases $$H^+$$ ions, thereby increasing the of rate photophosphorylation in green cells

B
It precipitates organic acids in palisades cells of leaves, thereby inhibiting respiration

C
It injuries foliage leading to reduction in photosynthesis, biomass and occasionally death

D
It precipitates toxic nutrients in soil leading to growth inhibition in trees
Question 9
1 / -0

Consider the following statements.
a. Polyhydroxybutyrates are produced by bacterial fermentation.
b. Polyhydroxybutyrates can be used as biodegradable plastics.
c. Transgenic trees are used in producing polyhydroxybutyrates.
Which of the statements given is/are correct?

A
$$1$$ only

B
$$1$$ and $$2$$ only

C
$$2$$ and $$3$$ only

D
$$1, 2$$ and $$3$$
Question 10
1 / -0

Photochemical smog always contains

A
aluminium ions

B
methane

C
ozone

D
sulphur

Solution

Photochemical smog is a type of smog produced when UV light from sun reacts with nitrogen oxides in the atmosphere. When exposed to ultraviolet radiation, NO₂ goes through a complex series of reactions with hydrocarbons to produce the components of photochemical smog—a mixture of ozone, nitric acid etc.
so the correct answer is 'Ozone'.

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Re-Attempt Weekly Quiz Competition

	I		II
(p)	Pollen grains	(i)	Photochemical smog
(q)	PAN	(ii)	Particulate pollution
(r)	$$CO_2$$	(iii)	Global warming
(s)	Cadmium	(iv)	Itai-itai disease

Environmental Chemistry Test - 48

Result

Environmental Chemistry Test - 48

Score

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Rank

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SHARING IS CARING

Question 1

Acid Rain

Convectional rainfall

Cyclonic rainfall

All of above

Solution

Question 2

a-iv, b-ii, c-iii, d-i

a-iv, b-iii, c-ii, d-i

a-iv, b-iii, c-i, d-ii

a-iv, b-i, c-ii, d-iii

Solution

Question 3

OH system

N$$_2$$O system

CFCl$$_2$$ system

CF$$_2$$Cl$$_2$$ system

Solution

Question 4

Bidding of Dermatology

Binding of Dirt

Biochemical Occupied Date

Biochemical Oxygen Demand

Solution

Question 5

Methane

Nitrous oxide

Ozone

Ammonia

Solution

Question 6

$${ NO }_{ 2 }$$ and $${ CO }_{ 2 }$$

$${ CH }_{ 4 }$$ and $${ SO }_{ 2 }$$

$${ CO }_{ 2 }$$ and $${ SO }_{ 2 }$$

$${ SO }_{ 2 }$$ and $${ NO }_{ 2 }$$

Solution

Question 7

p-ii, q-i, r-iii, s-iv

p-iv, q-ii, r-i, s-iii

p-i, q-ii, r-iii, s-iv

p-iii, q-i, r-ii, s-iv

Solution

Question 8

It releases $$H^+$$ ions, thereby increasing the of rate photophosphorylation in green cells

It precipitates organic acids in palisades cells of leaves, thereby inhibiting respiration

It injuries foliage leading to reduction in photosynthesis, biomass and occasionally death

It precipitates toxic nutrients in soil leading to growth inhibition in trees

Question 9

$$1$$ only

$$1$$ and $$2$$ only

$$2$$ and $$3$$ only

$$1, 2$$ and $$3$$

Question 10

aluminium ions

methane

ozone

sulphur

Solution

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