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JEE • CHEMISTRY • ENVIRONMENTAL CHEMISTRY
Environmental chemistry practice · Mixed difficulty
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Practice format and chapter quiz
These sets use single-correct-answer MCQs. They do not cover every JEE Main or JEE Advanced question format and are not full-length mock papers.
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Showing 121-135 of 135 questions
121
Medium
121 of 135
Understanding
+4 | -1
S-I: Photo chemical smog is oxidising in nature.
S-II: Photochemical smog contains and , formed during sequence of reactions.
S-II: Photochemical smog contains and , formed during sequence of reactions.
View answer and explanation
Correct option: A
Both S-I S-II are correct
Option A is correct because photochemical smog is indeed oxidizing in nature and contains NO and O3, which are formed during the sequence of reactions.
122
Easy
122 of 135
Understanding
+4 | -1
Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due to
View answer and explanation
Correct option: D
Forming stable compound with haemoglobin
Option D (Forming stable compound with haemoglobin) is correct because carbon monoxide binds strongly to hemoglobin, preventing oxygen transport.
123
Medium
123 of 135
Remembering
+4 | -1
______is the uppermost region of the earth atmosphere.
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Correct option: C
Exosphere
Option C (Exosphere) is correct because the exosphere is the outermost layer of Earth's atmosphere, extending from the thermosphere to outer space.
124
Easy
124 of 135
Remembering
+4 | -1
In which part of the atmosphere, ozone layer is present?
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Correct option: A
Stratosphere
Option A (Stratosphere) is correct because the ozone layer, which absorbs harmful UV radiation, is located in the stratosphere.
125
Medium
125 of 135
Remembering
+4 | -1
The region containing water vapour is
View answer and explanation
Correct option: C
troposphere
Option C (troposphere) is correct because the troposphere is the lowest layer of the atmosphere and contains most of the water vapor.
126
Medium
126 of 135
Remembering
+4 | -1
Which of the following is not a herbicide?
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Correct option: C
Polyphosphate
Option C (Polyphosphate) is correct because sodium chlorate, sodium arsenite, and triazines are all known herbicides, while polyphosphate is not.
127
Medium
127 of 135
Remembering
+4 | -1
Classical smog occurs in places of
View answer and explanation
Correct option: B
Low temperature
Option B is correct because classical smog, also known as reducing smog, is prevalent in areas with low temperatures and high levels of sulfur dioxide.
128
Easy
128 of 135
Remembering
+4 | -1
The most serious water pollutants are
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Correct option: A
Pathogens
Option A (Pathogens) is correct because pathogens, disease-causing microorganisms, pose the most immediate and serious threat to human health in water pollution.
129
Easy
129 of 135
Understanding
+4 | -1
S-I: The medium which is affected by the pollutant is receptor
S-II: The medium which reacts with pollutants is sink.
S-II: The medium which reacts with pollutants is sink.
View answer and explanation
Correct option: A
Both S-I S-II are correct
Option A (Both S-I
130
Easy
130 of 135
Remembering
+4 | -1
Which of the following is not a pollutant?
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Correct option: B
Nitrogen peroxide
Option B (Nitrogen peroxide) is correct because Nitrogen dioxide (NO2), commonly referred to as nitrogen peroxide, is a primary pollutant.
131
Medium
131 of 135
Remembering
+4 | -1
The viable particulate among the following is
View answer and explanation
Correct option: B
algae
Option B (algae) is correct because algae are living organisms that can be dispersed in the atmosphere as viable particulates.
132
Easy
132 of 135
Understanding
+4 | -1
Sulphur dioxide present in the industrial chimney exhaust causes:
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Correct option: D
All of the above
Option D (All of the above) is correct because sulfur dioxide causes respiratory problems, reduces plant productivity through acid rain, and corrodes building materials.
133
Easy
133 of 135
Remembering
+4 | -1
The most abundant pollutant is
View answer and explanation
Correct option: B
Methane
Option B (Methane) is correct because methane is the most abundant hydrocarbon pollutant.
134
Medium
134 of 135
Remembering
+4 | -1
Gas released during Bhopal tragedy was
View answer and explanation
Correct option: A
Methyl isocyanate
Option A (Methyl isocyanate) is correct because the gas released during the Bhopal tragedy was methyl isocyanate (MIC), a highly toxic chemical.
135
Medium
135 of 135
Remembering
+4 | -1
Depletion of ozone layer by CFCs is mainly due to formation of
View answer and explanation
Correct option: B
Chlorine radicals
Option B (Chlorine radicals) is correct because CFCs release chlorine atoms under UV radiation, which catalyze the destruction of ozone.
Revision notes and key takeaways
Review ENVIRONMENTAL CHEMISTRY in your textbook or class notes, then use this set to check your understanding.
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