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Online Tests
Chemistry Fsc Part 2 Chapter 16 Online Test MCQs With Answers
Question # 1
The pH range of the acid rain is
Choose an answer
7-6-5
6.6-6
6-5.6
less than 5
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Question # 2
Thickness of atmosphere is about how much kilometer above the surface of warth
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100 km
1000 km
10,000 km
unlimited
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Question # 3
Acid rain fist of all was observed by
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Augus Smith
Robert Hook
Mosley
Watson
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Question # 4
The mean residence time of methane in atmosphere in
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1-2 years
3-4 years
3-5 years
3-7 years
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Question # 5
Whcih water will be considered as polluted water.
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High value of COD
Low value of COD
High value of DO
Low value of BOD
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Question # 6
Ozone depletion in stratosphere region is mainly due to the reaction of O3 with
Choose an answer
O2
SO2
CFCs
All of these
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Question # 7
The pH of truly acidic rain is
Choose an answer
7-6.8
6.5-6
6-5.6
less than 5
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Question # 8
The minimum temperature of troposphere is.
Choose an answer
-2
o
C
-56
o
C
-100
o
C
15
o
C
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Question # 9
The news paper can be recycled again and again as many times as
Choose an answer
5
3
4
2
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Question # 10
Photochemical smog mainly consist of
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Higher hydrocarbons
Oxidising agnts
Reducing agent
All of these
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Question # 11
Which one is primary pollutant.
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Peroxyacetyl nitrate
Sulphuric acid
Carbonic acid
Carbon monoxide
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Question # 12
The main pollutant of leather tanneries in the waste water is due to
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Lead
Chromium VI
Copper
Chromium III
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Question # 13
The thickness of ozone layer is.
Choose an answer
25 to 50 km
25 to 28 km
3 km only
1 km only
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Question # 14
Half mass of atmosphere gases is present in.
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5-6 km distance above the surface of earth
10 km above the surface
100 km above the surface
56 km above the surface
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Question # 15
Ecosystem is smaller unit of
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Lithosphere
Hydroshpere
Amosphere
Biosphere
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Question # 16
How much fresh water is used for domestic purpose
Choose an answer
8%
23%
69%
100%
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Question # 17
On earth polar ice caps and glacier contains H2O
Choose an answer
1%
2%
3%
10%
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