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Environmental issues : NEET MCQ Questions

Are you looking for NEET MCQ Questions on Environmental issues? If Yes then you are at right place. Here you will find Environmental issues NEET MCQ Questions and Answers, Trivia, Quiz, Interview MCQ & Environmental issues Current Affairs for Competitive Exams like Neet exams, around 30% to 40% of Neet questions are asked from given Environmental issues Mcqs. as you know Questions and Ansers on Environmental issues MCQS is very important for Neet Exam. In this Environmental issues NEET section for Neet competition we are covering NEET MCQ Questions on Environmental issues

Contents

Question 1 : 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) has been arranged in ascending order?

A. SE < PE < S < DE

B. PE < S < SE < DE

C. S < DE < PE < SE

D. SE < S < PE < DE

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Question 2 : Which of the following strategy is not a correct approach to reduce global warming?

A. Reducing the greenhouse gas emission by limiting the use of fossil fuels

B. Increase the vegetation cover particularly the forest for photosynthetic utilization of CO2

C. Minimizing the use of nitrogen fertilizers in agriculture for reducing N2O emissions.

D. Increasing the use of air conditioners, refrigeration units and production of plastic foams and propellants in aerosol spray cans

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Question 3 : Deforestation results in

A. Increased sunlight

B. Increased grazing area

C. Weed control

D. Soil erosion

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Question 4 : The amount of fresh water on earth frozen as polar or glacial ice is

A. 0.5 %

B. 0.02 %

C. 0.01%

D. 1.97 %

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Question 5 : Why is ozone concentration less over the north and south poles?

A. CFCs accumulate only in an area where the air is cold

B. CFC use is highest in these areas

C. CFCs stick to frozen water vapour and can act as catalysts

D. UV rays are stronger in the atmosphere

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Question 6 : Identify the most efficient device to eliminate particulate matter from industrial emissions?

A. Cyclonic separators

B. Trajectory separators

C. Incineration

D. Electrostatic precipitator

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Question 7 : Which pollutant is non-degradable?

A. Smoke

B. Polythene

C. Copper scraps

D. Iron scraps

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Question 8 : Excessive fertilizer discharge into water bodies results in

A. Growth of fish

B. Death of hydrophytes

C. Eutrophication

D. Silt

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Question 9 : Which one of the following is the correct percentage of the two (out of the total of 4) greenhouse gases that contribute to total global warming?

A. CFCs 14%, Methane 20%

B. CO2, 40%, CFCs 30%

C. N2O 6%, CO2 86%

D. Methane 20%, N2O 18%

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Question 10 : Which of the following is not considered an atmosphere pollutant?

A. CO2

B. SO2

C. Hydrogen

D. CO

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Question 11 : Extensive planting of trees is known as

A. afforestation

B. agroforestry

C. deforestation

D. social forestry

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Question 12 : Carbon dioxide is known as a greenhouse gas because it is

A. Used in green-house to increase plant growth

B. Transparent to heat but traps sunlight

C. Transparent to sunlight but traps heat

D. Transparent to both sunlight and heat

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Question 13 : Greenhouse gases include

A. CO2, CFC, CH4 & NO2

B. CO2, O2, N2, NO2 & NH3

C. CH4, N2, CO2 & NH3

D. CFC, CO2, NH3 & N2

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Question 14 : Organic substances found in the biosphere necessarily contain

A. Silica

B. Carbon

C. Oxygen

D. Nitrogen

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Question 15 : Eggshell thinning in birds is caused by DDT because it inhibits

A. calmodulin

B. calcium ATPase

C. magnesium ATPase

D. carbonic anhydrase

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Question 16 : Bioindicators of water pollution cannot include which of the following?

A. Blood-worms

B. Stoneflies

C. Sewage fungus

D. Sludge-worms.

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Question 17 : What are stirred tank bioreactors designed for?

A. addition of preservatives to the product

B. purification of the product

C. ensuring anaerobic conditions in the culture vessel

D. availability of oxygen throughout the process

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Question 18 : Radioactive pollutants have the following adverse effects:

A. Gene mutation

B. Hepatitis

C. Polio

D. T.B.

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Question 19 : dB is a standard abbreviation used for the quantitative expression of?

A. the density of bacteria in a medium

B. a particular pollutant

C. the dominant Bacillus in a culture

D. a certain pesticide

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Question 20 : Fish die from sewage because

A. Of its bad smell

B. It replaces food material of fishes

C. It increases oxygen competition among fishes

D. CO2 is mixed in large amounts in water

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Question 21 : In India, jhum cultivation is practised in

A. North-East states

B. South–West coast

C. South-East coast

D. Gangetic plain

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Question 22 : Oxygen plays a significant role in a BOD test as it

A. Destroy inorganic matter

B. Destroy pollution

C. Destroy waste organic matter

D. None of these

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Question 23 : DDT is a

A. Non-biodegradable pollutant

B. Biodegradable pollutant

C. Antibiotics

D. None of the above

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Question 24 : What plant species would you choose for the production of bioethanol?

A. Zea mays

B. Pongamia

C. Jatropha

D. Brassica

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Question 25 : Among the following, which is not a greenhouse gas?

A. O2

B. CO2

C. N2O

D. CH4

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Question 26 : What undesirable changes do pollution cause in the following characteristics of air, water, land or soil?

A. Physical

B. Chemical

C. Biological

D. All of these

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Question 27 : Which of the following pairs of gases is the major cause of the greenhouse effect?

A. CO2 and O3

B. CO2 and CO

C. CFC and SO2

D. CO2 and N2O

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Question 28 : What is the use of lichens in cases of pollution?

A. They treat the polluted water

B. They act as bioindicators of pollution

C. They promote pollution

D. Lichens are not related to pollution

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Question 29 : Where is “good ozone” found?

A. mesosphere

B. troposphere

C. stratosphere

D. ionosphere

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Question 30 : Which of the following is primarily produced by the activity of anaerobic bacteria on sewage?

A. Laughing gas

B. Propane

C. Mustard gas

D. Marsh gas

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Question 31 : Which of the following does not result in pollution?

A. Thermal power project

B. Steel power plant

C. Automobiles

D. Hydroelectric project

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Question 32 : What does deforestation cause?

A. soil erosion

B. loss of biodiversity

C. disturbance in the hydrological cycle

D. All of the above

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Question 33 : The main pollutant in the air is

A. CO2

B. CO

C. N2

D. Sulphur

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Question 34 : The full form of B.O.D. is

A. Biological organism death

B. Biotic oxygen demand

C. Biochemical oxygen demand

D. Biological organisation day

Show Answer

Question 35 : Which act was enacted in 1986?

A. The Insecticide Act

B. The Water (Prevention and Control of Pollution) Act

C. The Noise (Prevention and Control of Pollution) Act

D. The Environment (Protection) Act

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Question 36 : Escherichia coli is used as an indicator organism to determine whether water is polluted with

A. pollen of aquatic plants

B. heavy metals

C. faecal matter

D. industrial effluents

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Question 37 : What is the BOD limit prescribed by the Central Pollution Control Board for the discharge of industrial and municipal wastewater into natural surface water?

A. < 10 ppm

B. < 100 ppm

C. < 30 ppm

D. < 3.0 ppm

Show Answer

Question 38 : What is the goal of the Montreal Protocol?

A. Biodiversity conservation

B. Control of water pollution

C. Control of CO2 emission

D. Reduction of ozone-depleting substances

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Question 39 : Determine which pair is correctly matched

A. Basal Convention – Biodiversity Conservation

B. Kyoto Protocol – Climatic change

C. Montreal Protocol – Global warming

D. Ramsar – Groundwater Convention pollution

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Question 40 : The control of gaseous pollutants can be achieved by

A. Arrestors

B. Electrostatic precipitators

C. Pyrolysis

D. Adsorption

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Question 41 : Which of these has the least greenhouse effect?

A. Carbon dioxide

B. Nitrogen gas

C. Water vapours

D. Ozone

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Question 42 : Identify the statement that describes the eco-friendly disposal of municipal solid waste

A. It should be burnt to completion

B. It should be dumped in an open wasteland

C. It should be dumped in sanitary landfills

D. It should be sorted out into bio-degradable, non- bio-degradable and recyclable wastes and treated separately

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Question 43 : Volcanoes are _ source of pollution

A. artificial

B. natural

C. Both (a) and (b)

D. man-made

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Question 44 : Taj Mahal may be destroyed due to?

A. Flood in Yamuna river

B. Decomposition of marble as a result of high temperature

C. Air pollutants released from oil refinery of Mathura

D. All of the above

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Question 45 : Which pollution causes photochemical smog

A. Soil

B. Water

C. Air

D. Noise

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Question 46 : How can global warming be controlled?

A. Reducing deforestation, increasing the use of fossil fuel.

B. Increasing deforestation, slowing down the growth of the human population.

C. Increasing deforestation, reducing the efficiency of energy usage.

D. Reducing deforestation, cutting down use of fossil fuel.

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Question 47 : What does the greenhouse effect refer to?

A. cooling of the earth

B. trapping of UV rays

C. production of cereals

D. warming of the earth

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Question 48 : Scrubbers are primarily used to remove the following gases from the exhaust after spraying water/ lime

A. CO2

B. SO2

C. O2 & N2

D. CO & CO2

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Question 49 : B.O.D. test of biological oxygen demand is used to measure

A. Air pollution

B. Water pollution

C. Noise pollution

D. Soil pollution

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Question 50 : The troposphere reflects what percentage of solar radiation into outer space?

A. 10%

B. 17%

C. 34%

D. 90%

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