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Environmental Issues · Biology · NEET
MCQ (Single Correct Answer)
1
Nitrates and phosphates flowing from agricultural farms into water bodies are a significant cause of :
NEET 2023 Manipur
2
What will happen if fresh water lake gets contaminated by addition of polluted water with high BOD?
NEET 2023 Manipur
3
Match List-I with List-II.
| List - I | List - II | ||
|---|---|---|---|
| (A) | Deforestation | (I) | Responsible for heating of Earth's surface and atmosphere |
| (B) | Reforestation | (II) | Conversion of forested areas to non-forested areas |
| (C) | Green-house effect | (III) | Natural ageing of lake by nutrient enrichment of its water |
| (D) | Eutrophication | (IV) | Process of restoring a forest that once existed but was removed |
Choose the correct answer from the options given below :
NEET 2023 Manipur
4
Select the correct statements regarding dissolved Oxygen and Biochemical Oxygen Demand.
(A) BOD is inversely related to dissolved oxygen.
(B) Low dissolved oxygen and high BOD lead to loss of aquatic life.
(C) High BOD leads to high dissolved oxygen.
(D) Both BOD and dissolved oxygen are indicator of health of a water body.
(E) Both BOD and dissolved oxygen are affected by amount of organic matter in the water body.
Choose the most appropriate answer from the options given below :
NEET 2023 Manipur
5
The thickness of ozone in a column of air in the atmosphere is measured in terms of :
NEET 2023
6
Which of the following statements is correct?
NEET 2023
7
Given below are two statements:
Statement I: Electrostatic precipitator is most widely used in thermal power plant.
Statement II : Electrostatic precipitator in thermal power plant removes ionising radiations.
In the light of the above statements, choose the most appropriate answer from the options given below:
NEET 2023
8
Why CNG is considered better fuel than diesel?
(a) It can not be adulterated.
(b) It takes less time to fill the fuel tank
(c) It burns more efficiently.
(d) It is cheaper.
(e) It is less inflammable.
Choose the most appropriate answer from the options given below :
NEET 2022 Phase 2
9
The device which can remove particulate matter present in the exhaust from a thermal power plant is:
NEET 2022 Phase 1
10
The entire fleet of buses in Delhi were converted to CNG from diesel. In reference to this, which one of the following statements is false?
NEET 2022 Phase 1
11
Given below are two statements:
Statement I : In a scrubber the exhaust from the thermal plant is passed through the electric wires to charge the dust particles.
Statement II : Particulate matter (PM 2.5) cannot be removed by scrubber but can be removed by an electrostatic precipitator.
In the light of the above statements, choose the most appropriate answer from the options given below:
NEET 2022 Phase 1
12
Dobson units are used to measure thickness of :
NEET 2021
13
Snow-blindness in Antarctic region is due to
NEET 2020 Phase 1
14
Montreal protocol was signed in 1987 for
control of
NEET 2020 Phase 1
15
In water hyacinth and water lily, pollination
takes place by :
NEET 2020 Phase 1
16
Which of the following protocols did aim for reducing emission of chlorofluorocarbons into the atmosphere?
NEET 2019
17
Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for :
NEET 2019
18
Which one of the following equipments is essentially required for growing microbes on a large scale, for
industrial production of enzymes?
NEET 2019
19
Which of the following pairs of gases is mainly responsible for green house effect?
NEET 2019
20
Which of these following methods is the most suitable for disposal of nuclear waste?
NEET 2019
21
Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from
respiratory disorder causing wheezing due to :
NEET 2019
22
World Ozone Day is celebrated on
NEET 2018
23
In stratosphere, which of the following elements
acts as a catalyst in degradation of ozone and
release of molecular oxygen?
NEET 2018
24
Which of the following is a secondary pollutant?
NEET 2018
25
Match the items given in column I with those in
column II and select the correct option given
below.
| Column I | Column II |
|---|---|
| (A) Eutrophication | (i) UV-B radiation |
| (B) Sanitary landfill | (ii) Deforestation |
| (C) Snow blindness | (iii) Nutrient enrichment |
| (D) Jhum cultivation | (iv) Waste disposal |
NEET 2018
26
Which one of the following statements is not valid for aerosols ?
NEET 2017
27
The highest DDT concentration in aquatic food chain shall occur in
NEET 2016 Phase 2
28
Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving
effluents from
NEET 2016 Phase 2
29
A lake which is rich in organic waste may result in
NEET 2016 Phase 2
30
Joint Forest Management Concept was introduced in India during :
NEET 2016 Phase 1
31
A river with an inflow of domestic sewage rich in organic waste may result in -
NEET 2016 Phase 1
32
Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers
NEET 2016 Phase 1
33
Acid rain is caused by increase in the
atmospheric concentration of -
AIPMT 2015
34
Eutrophication of water bodies leading to
killing of fishes is mainly due to nonavailability of -
AIPMT 2015
35
The UN conference of Parties on climate
change in the year 2012 was held at :
AIPMT 2015
36
Increase in concentration of the toxicant at
successive trophic levels is known as :
AIPMT 2015
37
Which of the following are most suitable
indicators of SO2 pollution in the
environment?
AIPMT 2015
38
Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to
depletion of stratospheric ozone?
AIPMT 2015 Cancelled Paper
39
The UN Conference of Parties on climate change in the year 2011 was held in :
AIPMT 2015 Cancelled Paper
40
High value of BOD (Biochemical Oxygen Demand) indicates that :
AIPMT 2015 Cancelled Paper
41
Rachel Carson's famous book "Silent Spring" is related to:
AIPMT 2015 Cancelled Paper
42
A location with luxuriant growth of lichens on the trees indicates that the :
AIPMT 2014
43
A scrubber in the exhaust of a chemical industrial plant removes :
AIPMT 2014
44
The zone of atmosphere in which the ozone layer is present is called :
AIPMT 2014
45
The second commitment period for Kyoto Protocol
was decided at :
NEET 2013 (Karnataka)
46
Climate of the world is threatened by :
NEET 2013 (Karnataka)
47
Which one of the following is not correct as regards
the harmful effects of particulate matter of the size
2.5 micro meters or less ?
NEET 2013 (Karnataka)
48
Global warming can be controlled by :
NEET 2013
49
Kyoto-Protocol was endorsed at :
NEET 2013
50
The Air Prevention and control of pollution Act came into force in :
NEET 2013
51
Which one of the following is a wrong statement?
AIPMT 2012 Prelims
52
In an area where DDT had been used extensively, the population of birds declined significantly
because :
AIPMT 2012 Prelims
53
Measuring biochemical oxygen demand (BOD) is a method used for
AIPMT 2012 Prelims
54
''Good ozone'' is found in the :
AIPMT 2011 Mains
55
Which one of the following is correct expanded forms of
the following acronyms ?
AIPMT 2011 Prelims
56
Which one of the following statements is wrong
in case of Bhopal tragedy ?
AIPMT 2011 Prelims
57
Which one of the following pairs of gases are the
major cause of "Green house effect"?
AIPMT 2011 Prelims
58
Eutrophication is often seen in :
AIPMT 2011 Prelims
59
When domestic sewage mixes with river water -
AIPMT 2010 Mains
60
dB is a standard abbreviation used of the
quantitative expression of –
AIPMT 2010 Prelims
61
The two gases making highest relative
contribution to the green house gases are –
AIPMT 2010 Prelims
62
A renewable exhaustible natural resource is –
AIPMT 2010 Prelims
63
DDT residues are rapidly passed through food
chain causing biomagnification because DDT is :
AIPMT 2009
64
Chipko movement was launched for the
protection of -
AIPMT 2009
65
Montreal protocol aims at :
AIPMT 2009
66
Biochemical Oxygen Demand (BOD) in a river
water :
AIPMT 2009
67
Step taken by the Government of India to control
air pollution include :
AIPMT 2009
68
Global agreement in specific control strategies to
reduce the release of ozone depleting substances,
was adopted by :
AIPMT 2009
69
Which one of the following is the correct
percentage of the two (out of the total of 4)
greenhouse gases that contribute to the total
global warming ?
AIPMT 2008
70
According to Central Pollution Control Board
(CPCB), which particulate size in diameter (in
micrometers) of the air pollutants is responsible
for greatest harm to human health?
AIPMT 2008
71
A lake near a village suffered heavy mortality of
fishes within a few days. Consider the following
reasons for this?
(i) Lots of urea and phosphate fertilizer were used in the crops in the vicinity
(ii) the area was sprayed with DDT by an aircraft
(iii) The lake water turned green and stinky
(iv) Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis
Which two of the above were the main causes of fish mortality in the lake?
(i) Lots of urea and phosphate fertilizer were used in the crops in the vicinity
(ii) the area was sprayed with DDT by an aircraft
(iii) The lake water turned green and stinky
(iv) Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis
Which two of the above were the main causes of fish mortality in the lake?
AIPMT 2008
72
In a coal fired power plant electrostatic
precipitators are installed to control emission of:-
AIPMT 2007
73
Which one of the following statements is correct ?
AIPMT 2007
74
Which one of the following is not a bioindicator
of water pollution ?
AIPMT 2007
75
In which one of the following the BOD
(Biochemical Oxygen Demand) of sewage (S),
distillery effluent (DE), paper mill effluent (PE)
and sugar mill effluent (SE) have been arranged
in ascending order ?
AIPMT 2007
76
Limit of BOD prescribed by Central Pollution
Control Board for the discharge of industrial and
municipal waste waters into natural surface
waters, is -
AIPMT 2006
77
Montreal Protocol which calls for appropriate
action to protect the ozone layer from human
activities was passed in the year-
AIPMT 2006
78
Photochemical smog pollution does not contain-
AIPMT 2006
79
Which one of the following pairs is
mismatched ?
AIPMT 2005
80
Identify the correctly matched pair -
AIPMT 2005
81
Which of the following is not used for
disinfection of drinking water ?
AIPMT 2005
82
Prolonged liberal irrigation of agricultural fields
is likely to create the problem of -
AIPMT 2005
83
Common indicator organism of water pollution
is :-
AIPMT 2004
84
Lead concentration in blood is considered
alarming if it is -
AIPMT 2004
85
In 1984, the Bhopal gas tragedy took place
because methyl isocyanate :-
AIPMT 2004
86
Escherichia coli is used as an indicator
organism to determine pollution of water with ;-
AIPMT 2003
87
Fluoride pollutions mainly affects : -
AIPMT 2003
88
Maximum green house gas released by which
country :
AIPMT 2002
89
Which of the following is absent in polluted
water ?
AIPMT 2002
90
What is the intensity of sound in normal
conversation ?
AIPMT 2001
91
What is B.O.D ?
AIPMT 2001
92
Which is the cause of damage to relative
biological effectiveness ?
AIPMT 2000