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Environmental Issues — NEET UG Botany PYQs

192 previous year questions from Environmental Issues with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

192 questionsBotanySolutions on every page
1

What will happen if fresh water lake gets contaminated by addition of polluted water with high BOD?

NEET 2023 Solution View → 2

Nitrates and phosphates flowing from agricultural farms into water bodies are a significant cause of :

NEET 2023 Solution View → 3

Match List-I with List-II Choose the correct answer from the option given below:

NEET 2023 Solution View → 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

NEET 2023 Solution View → 5

The thickness of ozone in a column of air in the atmosphere is measured in terms of:

NEET 2023 Solution View → 6

Which one of the following statements is NOT correct?

NEET 2023 Solution View → 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

NEET 2023 Solution View → 8

Which of the following statements is correct?

NEET 2023 Solution View → 9

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

NEET 2022 Solution View → 10

The device which can remove particulate matter present in the exhaust from a thermal power plant is:

NEET 2022 Solution View → 11

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 Solution View → 12

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 : Pa

NEET 2022 Solution View → 13

Dobson units are used to measure thickness of:

NEET 2021 Solution View → 14

Air (Prevention and Control of Pollution) Act was amended in 1987 to include among pollutants:

NEET 2020 Solution View → 15

According to Central Pollution Control Board [ CPCB ] what size (in diameter) of particulate is responsible for causing greater harm to human health?

NEET 2020 Solution View → 16

Snow-blindness in Antarctic region is due to

NEET 2020 Solution View → 17

Montreal protocol was signed in 1987 for control of

NEET 2020 Solution View → 18

Eutrophication is caused due to

JIPMER 2019 Solution View → 19

Which of the following statements about ozone is correct?

NEET 2019 Solution View → 20

Which of the following is an innovative remedy for plastic waste?

NEET 2019 Solution View → 21

If an agricultural field is liberally irrigated for a prolonged period of time, it is likely to face problem of

NEET 2019 Solution View → 22

Which of these following methods is the most suitable for disposal of nuclear waste?

NEET 2019 Solution View → 23

Which of the following pairs of gases is mainly responsible for green house effect?

NEET 2019 Solution View → 24

Which of the following protocols did aim for reducing emission of chlorofluorocarbons into the atmosphere?

NEET 2019 Solution View → 25

Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for:

NEET 2019 Solution View → 26

Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to

NEET 2019 Solution View → 27

Which gases are responsible for increasing the temperature of atmosphere?

NEET 2019 Solution View → 28

Assertion : Mercury vapour emitting out from scrubber does not pollute environment. Reason : Scrubber cannot trap mercury vapour.

NEET 2019 Solution View → 29

Eutrophication is caused due to

NEET 2019 Solution View → 30

World Ozone Day is celebrated on

NEET 2018 Solution View → 31

In the stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen?

NEET 2018 Solution View → 32

Which of the following is a secondary pollutant?

NEET 2018 Solution View → 33

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. Sanita

NEET 2018 Solution View → 34

Assertion : Deforestation sequesters CO ₂ from atmosphere. Reason : Global warming is beneficial for plants and human health.

NEET 2018 Solution View → 35

Which one of the following options correctly designate the percent contribution of gases (A, B , C and D) responsible for global warming?

NEET 2018 Solution View → 36

Assertion: Pollution is always caused by human activities. Reason: Pollution is not different from contamination.

NEET 2018 Solution View → 37

Which one of the following combinations is incorrect?

JIPMER 2017 Solution View → 38

Which one of the following statements is not valid for aerosols?

NEET 2017 Solution View → 39

Which one of the following combinations is incorrect?

NEET 2017 Solution View → 40

A lake which is rich in organic waste may result in

NEET 2016 Solution View → 41

The highest DDT concentration in aquatic food chain shall occur in

NEET 2016 Solution View → 42

Crop rotation with legume or grass pasture to improve soil structure and fertility is called,

NEET 2016 Solution View → 43

Joint Forest Management Concept was introduced in India during:

NEET 2016 Solution View → 44

Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers?

NEET 2016 Solution View → 45

One greenhouse gas contributes 14 % to total global warming and another contributes 6 % . These are respectively identified as

NEET 2016 Solution View → 46

If the threshold for hearing increasing 1000 times, the hearing loss is

JIPMER 2015 Solution View → 47

Acid rain is caused by the increase in the atmospheric concentration of :

NEET 2015 Solution View → 48

An increase in the concentration of the toxicant at successive trophic levels is known as:

NEET 2015 Solution View → 49

Which of the following are the most suitable indicators of S O 2 pollution in the environment?

NEET 2015 Solution View → 50

Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of

NEET 2015 Solution View → 51

Rachel Carson's famous book ''Silent Spring'' is related to:

NEET 2015 Solution View → 52

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?

NEET 2015 Solution View → 53

Match the following and select the correct option.

NEET 2015 Solution View → 54

Assertion : BOD of a river polluted by sewage is more than 20 ppm . Reason : Polluted river contains excess of organic matter.

NEET 2015 Solution View → 55

Assertion : Presence of large amounts of nutrients in water body causes excessive growth of planktonic algae. Reason : It is due to biomagnification.

NEET 2015 Solution View → 56

If the threshold for hearing increasing 1000 times, the hearing loss is

NEET 2015 Solution View → 57

Maximum green house gases are released by

JIPMER 2014 Solution View → 58

A lake with an inflow of domestic sewage rich in organic waste may result in

JIPMER 2014 Solution View → 59

In a coal fired power plant, electrostatic precipitators are installed to control emission of

JIPMER 2014 Solution View → 60

The zone of atmosphere in which the ozone layer is:

NEET 2014 Solution View → 61

A scrubber in the exhaust of a chemical industrial plant removes:

NEET 2014 Solution View → 62

Photochemical smog formed in congested metropolitan cities mainly consists of

NEET 2014 Solution View → 63

Assertion : Secondary air pollutants are formed by interaction among the primary pollutants and are more toxic. Reason: DDT is a secondary air pollutant.

NEET 2014 Solution View → 64

Maximum green house gases are released by

NEET 2014 Solution View → 65

In a coal fired power plant, electrostatic precipitators are installed to control emission of

NEET 2014 Solution View → 66

A lake with an inflow of domestic sewage rich in organic waste may result in

NEET 2014 Solution View → 67

Soil salinity is measured by

JIPMER 2013 Solution View → 68

The second commitment period for Kyoto Protocol was decided at:

NEET 2013 Solution View → 69

Climate of the world is threatened by:

NEET 2013 Solution View → 70

Which one of the following is not correct with regard to the harmful effects of particulate matter of the size 2.5 micro meters or less?

NEET 2013 Solution View → 71

Kyoto Protocol was endorsed at

NEET 2013 Solution View → 72

Global warming can be controlled by

NEET 2013 Solution View → 73

The Air Prevention and Control of Pollution Act came into force in

NEET 2013 Solution View → 74

Which of the following is not an invasive species?

NEET 2013 Solution View → 75

A large quantity of urban sewage is drained to nearby village river. Which among the given conditions would happen after mixing of sewage into the river? (i) Biochemical oxygen dem

NEET 2013 Solution View → 76

Which of the following is a secondary pollutant?

NEET 2013 Solution View → 77

Soil salinity is measured by

NEET 2013 Solution View → 78

Which insecticide is more hazardous to human health?

JIPMER 2012 Solution View → 79

In an area where DDT had been used extensively, the population of birds declined significantly because

NEET 2012 Solution View → 80

Which one of the following is a wrong statement?

NEET 2012 Solution View → 81

Cattle ranches are known to causes acute green house effect. This is due to

NEET 2012 Solution View → 82

Select the correct statement.

NEET 2012 Solution View → 83

Which insecticide is more hazardous to human health?

NEET 2012 Solution View → 84

Carbon monoxide is a pollutant because it

JIPMER 2011 Solution View → 85

The Montreal Protocol refers to

JIPMER 2011 Solution View → 86

Which important green house gas, other than carbon dioxide, is being produced from the agricultural fields?

JIPMER 2011 Solution View → 87

Biological Oxygen Demand (BOD) is a measure of

JIPMER 2011 Solution View → 88

Minamata disease is caused due to presence of..... in water.

JIPMER 2011 Solution View → 89

Which one of the following pairs of gases are the major cause of 'Green house effect'?

NEET 2011 Solution View → 90

Which one of the following statements is wrong in case Bhopal gas tragedy?

NEET 2011 Solution View → 91

Good ozone is found in the

NEET 2011 Solution View → 92

In vehicles, catalytic converters are used

NEET 2011 Solution View → 93

Which of the following statements is correct?

NEET 2011 Solution View → 94

Assertion : Amount of organic biodegradable compounds present in water is measured by the BOD of that water. Reason : During biodegradation of biodegradable organic compounds, oxyg

NEET 2011 Solution View → 95

Assertion : Algal blooms are formed in nutrientless water. Reason : Algal blooms in water turn it unfit for human consumption, but cause enormous growth of fish.

NEET 2011 Solution View → 96

Which important green house gas, other than carbon dioxide, is being produced from the agricultural fields?

NEET 2011 Solution View → 97

Minamata disease is caused due to presence of..... in water.

NEET 2011 Solution View → 98

Carbon monoxide is a pollutant because it

NEET 2011 Solution View → 99

Biological Oxygen Demand (BOD) is a measure of

NEET 2011 Solution View → 100

The Montreal Protocol refers to

NEET 2011 Solution View → 101

Ozone depletion in stratosphere would result in

JIPMER 2010 Solution View → 102

d B is a standard abbreviation used for the quantitative expression of

NEET 2010 Solution View → 103

The two gases making highest relative contribution to the greenhouse gases are

NEET 2010 Solution View → 104

Assertion : Presence of large amounts of nutrients in water body causes excessive growth of planktonic algae. Reason : It is due to biomagnification.

NEET 2010 Solution View → 105

Ozone depletion in stratosphere would result in

NEET 2010 Solution View → 106

Which is always present in photochemical smog?

JIPMER 2009 Solution View → 107

The soil which is transported by wind is known as

JIPMER 2009 Solution View → 108

DDT residues are rapidly passed through food chain causing biomagnification because DDT is

NEET 2009 Solution View → 109

Steps taken by the Government of India to control air pollution include

NEET 2009 Solution View → 110

Montreal protocol aims at

NEET 2009 Solution View → 111

Montreal protocol aims at :

NEET 2009 Solution View → 112

Step taken by the Government of India to control air pollution include :

NEET 2009 Solution View → 113

Biochemical Oxygen Demand (BOD) in a river water :

NEET 2009 Solution View → 114

DDT residues are rapidly passed through food chain causing biomagnification because DDT is :

NEET 2009 Solution View → 115

Global agreement in specific control strategies to reduce the release of ozone depleting substances, was adopted by :

NEET 2009 Solution View → 116

Rain is called acid-rain when its pH is below

NEET 2009 Solution View → 117

The first bioherbicide developed in 1981 was based on

NEET 2009 Solution View → 118

Assertion : Excess of nitrates in drinking water are harmful for infants. Reason : Nitrates are responsible for blue baby syndrome.

NEET 2009 Solution View → 119

Which is always present in photochemical smog?

NEET 2009 Solution View → 120

The soil which is transported by wind is known as

NEET 2009 Solution View →
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