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Test : Environmental Issues 4 - From Past 28 Years Questions


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25 Questions MCQ Test Biology 31 Years NEET Chapterwise Solved Papers | Test : Environmental Issues 4 - From Past 28 Years Questions

Test : Environmental Issues 4 - From Past 28 Years Questions for NEET 2022 is part of Biology 31 Years NEET Chapterwise Solved Papers preparation. The Test : Environmental Issues 4 - From Past 28 Years Questions questions and answers have been prepared according to the NEET exam syllabus.The Test : Environmental Issues 4 - From Past 28 Years Questions MCQs are made for NEET 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test : Environmental Issues 4 - From Past 28 Years Questions below.
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Test : Environmental Issues 4 - From Past 28 Years Questions - Question 1

Acid rains are produced by

[1988, 89, 91]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 1

NO2 and SO2 after reacting with water in atmosphere produce HNO3 & H2SO4 which fall down as acid rain.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 2

Which one is not a pollutant normally?

[1988, 92]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 2

CO2 in its normal fraction in air (about 0.03%) is actually  not a pollutant but above this it is considered as a pollutant. At the elevated level it becomes a cause for global waring.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 3

Green house effect is warming due to

[1989, 91]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 3

Increase in the concentration of CO2 do not allow the earth's radiations to go out of earth’s atmosphere and contributes in increasing temperature of earth.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 4

Major aerosol pollutant in jet plane emission is

[1990]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 4

Fluorides of carbon is the major pollutant from jet plane emission.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 5

Gas released during Bhopal tragedy was

[1990, 99]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 5

MIC → (Methyl Isocyanate) was the deadly gas leaked from the fertilizer plant of Union Carbide company in Bhopal.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 6

Domestic waste mostly constitutes :

[1991]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 6

"Domestic waste" means any non-putrescible waste, consisting of combustible materials, such as paper, cardboard, yard clippings, wood, or similar materials, generated in a dwelling, including the real property upon which it is situated, containing four living units or less. These wastes are biodegradable hence, considered as biodegradable pollution. 

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 7

Most hazardous metal pollutant of automobile exhausts is

[1992]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 7

Lead (Pb) is the most hazardous metal pollutant present in automobile exhaust.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 8

Ultraviolet radiations from sunlight causes a reaction that produces

[1993]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 8

Ultraviolet radiation scause photochemical splitting of oxygen molecules in the stratosphere. The nascent oxygen combines with molecular oxygen to form ozone. In troposphere nascent oxygen comes from nitrogen dioxide.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 9

Atmosphere of big/metropolitan cities is polluted most by

[1994]

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 10

Highest DDT deposition shall occur in

[1994]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 10

DDT is not soluble in water but soluble in fats. Aquatic micro-organisms absorb them in fats where they accumulate to form concentration many times greater than in water. Zooplankton accumulate more concentrations, fishes feeding on zooplanktons also accumulate more concentration and finally birds feeding on fishes contain these compounds in more concentration. This increase in accumulation of toxic substances in the food pyramids is called "Biological magnification."

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 11

Which gas contributes most to green house effect?

[1994]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 11

CO2 is the major green house gas causing green house effect which is released in the atmosphere by burning fossil (combustion) or by activities like animal respiration. Deforestation adds to the increase in CO2 in atmosphere because trees are cut down which are the big absorber of CO2

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 12

Disease caused by eating fish found in water contaminated with industrial waste having mercury is

[1994]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 12

Minamata disease.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 13

Drawback of DDT as pesticide is

[1994]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 13

In 1962, American biologist Rachel Carson published the book Silent Spring, which alleged that DDT caused cancer and harmed bird reproduction by thinning egg shells. This followed the principles of biological magnification, killing higher level organisms like the birds.
DDT is a persistent organic pollutant with a reported half life of between 2-15 years, and is immobile in most soils. 

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 14

Sound becomes hazardous noise pollution at level

[1994]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 14

Above 80 dB sound becomes hazardous.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 15

Fish die in water bodies polluted by sewage due to

[1994]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 15

Sewage kills plant life and also use oxygen for degradation, so oxygen content of water is lowered and hence animal life in water body start decreasing. 

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 16

The Taj Mahal is threatened due to the effect of

[1995]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 16

The Taj Mahal is threatened by environmental pollution, especially by acid rain due to sulphur dioxide emitted from Mathura refinery.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 17

When huge amount of sewage is dumped into a river, its B.O.D, will

[1995]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 17

By dumping of huge amount of sewage, the oxygen levels are depleted, which are reflected in terms of BOD values of water. The number of microbes also increases tremendously and these also consume most of the oxygen. Thus BOD of the river water will increase.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 18

In Minamata Bay Japan, the animals which remained free from Minamata disease, are  

[1995]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 18

Release of mercur y in water causes pollution. Mercury enters the food chain killing fishes. Human beings feeding on such fishes will suffer from minamata disease. Similarly all carnivores feeding on fishes will develop this disease except rabbit because it is herbivore.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 19

Sewage drained into water bodies kill fishes because

[1996]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 19

Organic pollutants brought in by the sewage drained into water bodies provides nutrients for stimulating growth of algae. Algal bloom reduces availability of light to the submerged plants which get killed. Dead algae and dead submerged  plants consume oxygen during decomposition, causing oxygen depletion and increases competition for oxygen.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 20

The worst environmental hazards were created by accidents in nuclear power plant and MIC gas tragedy respectively in

[1996]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 20

The MIC gas tragedy occurred in Bhopal in 1984 and the Chernobyl tragedy (nuclear power plant) occurred in Ukraine in 1986.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 21

The major contributor of Green House gases to the atmosphere is

[1996, 2002]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 21

The major contributor of Green House gases to the atmosphere is U.S.A., which itself releases around 37% of the chlorofluorocarbons (CFCs).

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 22

Phosphate pollution is caused by

[1997]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 22

Part of fertilizers containing phosphates are passed down into water bodies as surface run off. Sewage contamination  also results in algal bloom (eutrophication) due to increased availability of nitrate and phosphate.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 23

The CO2 content in the atmospheric air is about

[1997]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 23

The content of CO2 in atmospheric air is 0.034%. The main contributors to air are N2 and O2.

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 24

In coming years, skin related disorders will be more common due to

[1997]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 24

Increase in air pollution has resulted in gradual depletion of the ozone layer. This  has exposed the earth's surface to the harmful ultraviolet radiations of the sun. Exposure to UV rays increases the risk of skin cancer and other skin related disorders. 

Test : Environmental Issues 4 - From Past 28 Years Questions - Question 25

Formation of ozone hole is maximum over

[1997]

Detailed Solution for Test : Environmental Issues 4 - From Past 28 Years Questions - Question 25

Ozone hole is an area with extreme reduction in the ozone concentration. It was discovered over Halley Bay in Antarctica by Farman et. al (1985), members of British Antarctic Survey Team.
Image of the largest Antarctic ozone hole ever recorded in September 2006.

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