NEET Biology Environmental Issues MCQs Set C

Question: For the given statement which option is correct?

Statement:

(X)Unleaded petrol should be used in automobiles with catalytic converter to reduce pollution.

(Y)Lead in the petrol inactivates Rhodium and palladium .

• a) Both X and Y are correct.Y gives correct explanation for X
• b) Both X and Y are correct.Y does not give correct explanation for X
• c) X is correct, Y is wrong
• d) X is wrong and Y is correct

Answer: Both X and Y are correct.Y gives correct explanation for X

Question: For the given statement which option is correct?

Statement:

(X)DDT and plastic both are nonbiodegradable Waste

(Y) As the time passes, Pollutants of domestic sewage does not remain pollutants.

• a) Both X and Y are correct.Y does not give correct explanation for X
• b) Both X and Y are correct.Y gives correct explanation for X
• c) X is correct, Y is wrong (D) X is wrong and Y is correct
• d) None of this

Answer: Both X and Y are correct.Y does not give correct explanation for X

Question: For the given statement which option is correct?

Statement

(X)Organic farming means agriculture with the help of chemicals.

(Y)500 members of Haryana Kissan welfare club have adopted this agricultural practice.

• a) X is wrong and Y is correct
• b) X is correct, Y is wrong
• c) Both X and Y are correct.Y does not give correct explanation for X
• d) Both X and Y are correct.Y gives correct explanation for X

Answer: X is wrong and Y is correct

Question: For the given statement which option is correct?

Statement

(X)Deforestation is one of the important factor for global warming.

(Y)Green house gas CO₂ increases due to deforestation. .

• a) Both X and Y are correct.Y gives correct explanation for X
• b) Both X and Y are correct.Y does not give correct explanation for X
• c) X is correct, Y is wrong
• d) X is wrong and Y is correct

Answer: Both X and Y are correct.Y gives correct explanation for X

Question: Which gas is responsible for increase in atmosphere temperature?

• a) CO₂
• b) O₂
• c) SO₂
• d) CO

Answer: CO₂

Question: Slash and burn agriculture means

• a) Jhum cultivation
• b) Reforestation
• c) Cultivation on hills
• d) Agriculture on desert land

Answer: Jhum cultivation

Question: Which of the following is responsible for protection of living organism on earth?

• a) Ozone layer
• b) Troposphere
• c) Green house strategy
• d) Uvrays

Answer: Ozone layer

Question: With respect to value of BOD, arrange the following in descending order.

i) Distilled water ii) Tap water

iii)Industrial effluent iv)Sewage discharge in the river

• a) iii –iv – ii - i
• b) ii – I – iv – iii
• c) iv –iii – ii - i
• d) i– ii – iii - iv

Answer: iii –iv – ii - i

Question: Domestic sewage with -------% impurities is unfit for human use

• a) 0.1%
• b) 0.02%
• c) 0.01%
• d) 0.2%

Answer:  0.1%

Question: Green house Effect is the cumulative result of the influence of certain gases.

Identify the gas which is not involved in the influence

• a) N₂
• b) CH₄
• c) CFC
• d) CO

Answer: N₂

Question: If fertilizers are added to fresh water

• a) Eutropication will occur
• b) Overall animal population will decrease
• c) Plants will die
• d) Fish population will decrease

Answer: Eutropication will occur

Question: With the help of electrostatic precipitator which Air pollutant produced by cement factory is separated?

• a) SPM
• b) SO₂
• c) CO
• d) NO₂

Answer: SPM

Question: Which of the following does not occur when the sewage is discharged into the river?

• a) Eutropication
• b) Depletion of O₂
• c) Algal bloom
• d) Increase in O₂

Answer: Eutropication

Question: What is correct for the region labeled as a,b,c and d?

• a) a- CO₂ 60% ,b- CH₄ 20% , c- CFC 14% ,d-N₂O 6%
• b) a- CFC60% ,b- CH₄ 20% , c- CO₂ 14% ,d-N₂O 6%
• c) Both
• d) None of this

Answer: a- CO₂ 60% ,b- CH₄ 20% , c- CFC 14% ,d-N₂O 6%

Question:  In the given chart of biological magnification what does a and b indicate?

Fish eating birds-DDT -25ppm

• a) 

  a= Zooplanktons , b=large fish

  Small fish-DDT - 0.5ppm

• b)

  a=phytoplanktons,b=insects eating bird

• c)

  a=DDT-0.03ppm,b=DDT-2ppm

• d)

  a=DDT-0.04ppb,b-DDT-2ppb

  Water- DDT -0.0003ppm

Answer:

a= Zooplanktons , b=large fish

Small fish-DDT - 0.5ppm

Question: In which form earth ‘s surface reemits heat?

• a)

  

• b) Gamma rays
• c) Infrared radiation
• d) None of this

Answer:

Question: Which metal is the main air pollutant in metro cities?

• a) Lead
• b) Copper
• c) Magnesium
• d) Iron

Answer: Lead

Question: To safeguard our water resource the amendment was passed in the year.

• a) 1974
• b) 1981
• c) 1986
• d) 1987

Answer: 1974

Question: Thinning of eggshell and their premature breaking is due to

• a) Biological magnification
• b) Global warming
• c) Eutrophication
• d) Green house effect

Answer: Biological magnification

Question: Compressed Natural Gas (CNG) is

• a) Methane
• b) Propane
• c) Ethane
• d) Butane

Answer: Methane

Question: The electrostatic precipitator can remove over ____ particulate matter

• a) 99%
• b) 100%
• c) 89%
• d) 45%

Answer: 99%

Question: World’s most problematic aquatic weed is

• a) Eichhornia
• b) Wolffia
• c) Azolla
• d) Trapa

Answer: Eichhornia

Question: Among the 41 most polluted cities of the world, Delhi ranked

• a) Fourth
• b) Second
• c) Third
• d) First

Answer: Fourth

Question: By the end of 2002 in Delhi which step is completed for reducing vehicular pollution?

• a) Buses were converted to run on CNG
• b) Phasing out of old vehicles
• c) Uses of unleaded petrol
• d) Use of catalytic converters

Answer:  Buses were converted to run on CNG

Question:

• a) a(v), b(iii), c(iv), d(ii), e(i)
• b) a(i), b(ii), c(iv), d(v), e(iii)
• c) a(v), b(ii), c(iv), d(i), e(iii)
• d) a(i), b(iii), c(iv), d(v), e(ii)

Answer: a(v), b(iii), c(iv), d(ii), e(i)

Question: Ramesh Chandra Dagar includes _____ for case study of organic farming

• a) All of these
• b) Water harvesting
• c) Dairy management
• d) Bee-keeping

Answer: All of these

Question: The domestic sewage in large cities

• a) Is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs)
• b) Has a high BOD as it contains both aerobic and anaerobic bacteria
• c) When treated in STPs does not really require the aeration step as the sewage contains adequate oxygen
• d) Has very low amounts of suspended solids and dissolved salts

Answer:  Is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs)

Question: Prime contaminants leading to cultural or accelerated eutrophication are

• a) Phosphates and nitrates
• b) Fecal matter and paper fibres
• c) Sand and clay
• d) Nitrates and sulphates

Answer: Phosphates and nitrates

Question: Euro-II is emission norms for reducing

• a) Sulphur and aromatic hydrocarbons
• b) O₃ and CO
• c)

  

• d) None of these

Answer: Sulphur and aromatic hydrocarbons

Question: Ecosanitation is

• a) Sustainable system for handling human excreta
• b) Sustainable system for handling agricultural wastes
• c) Sustainable system for handling industrial effluents
• d) Sustainable system for handling biomagnification

Answer: Sustainable system for handling human excreta

Question: Hospital wastes are

• a) Hazardous and disposed by incinerator
• b) Hazardous and disposed into water
• c) Non-hazardous and disposed by incinerator
• d) Non-hazardous and disposed into water

Answer: Hazardous and disposed by incinerator

Question: In an aquatic food chain, if water body is having 0.003 ppb of DDT, its maximum concentration can be observed in

• a) Fish eating birds
• b) Small fish
• c) Phytoplanktons
• d) Large fish

Answer: Fish eating birds

Question: The raw material for making polyblend is

• a) Plastic film waste
• b) Any biodegradable waste
• c) Bitumen
• d) Recycled plastic

Answer: Plastic film waste

Question: Integrated organic farming has been adopted in India by

• a) Ramesh Chandra Dagar
• b) Ahmed Khan
• c) Amrita Devi
• d) Panduranga Hegde

Answer: Ramesh Chandra Dagar

Question: During the past century, the temperature of earth has increased by

• a) 0.6°C
• b) 1.6°C
• c) 33°C
• d) 15°C

Answer: 0.6°C

Question: What percentage of forest for hills has been recommended by National Forest Polices (1988) of India?

• a) 67%
• b) 19.4%
• c) 23%
• d) 33%

Answer: 67%

Question: Recognizing the deleterious effects of ozone depletion an international treaty known as ______ was signed at _____

• a) Montreal Protocol, Canada
• b) Earth Summit, Montreal
• c) Kyoto Protocol, Brazil
• d) World Summit, South Africa

Answer: Montreal Protocol, Canada

Question: Snow blindness is caused by

• a) UV-B
• b) UV-A
• c) X-rays
• d) UV-C

Answer: UV-B

Question: Govenment of India has introduced a concept to work closely with local communities for protection and management of forests called

• a) Joint Forest Management
• b) Chipko movement
• c) Jhum cultivation
• d) Appiko movement

Answer:  Joint Forest Management

Question:

• a) a(iv), b(ii), c(iii), d(i)
• b) a(iii), b(iv), c(ii), d(i)
• c) a(i), b(ii), c(iii), d(iv)
• d) a(ii), b(iii), c(iv), d(i)

Answer: a(iv), b(ii), c(iii), d(i)

Question: Chipko movement is related to conservation of forests in

• a) Garhwal Himalayan
• b) South India
• c) Rajasthan
• d) Gujarat

Answer: Garhwal Himalayan

Question: Jhum cultivation leads to

• a) Deforestation
• b) Conservation of forests
• c) Afforestation
• d) Soil pollution

Answer: Deforestation

Question: Overcultivation and unrestricted grazing are examples of

• a) Improper resource utilisation
• b) Jhum cultivation
• c) Deforestation
• d) Greenhouse effect

Answer:  Improper resource utilisation

Question: Algal bloom in a lake

• a) All of these
• b) Leads to oxygen depletion
• c) Kills fishes
• d) Increases CO₂ level

Answer: All of these

Question: Thermal pollution is more prevalent near

• a) Coal based power plants
• b) Tropical zones
• c) Hot water springs
• d) Temperate zones

Answer: Coal based power plants

Question: Most hazardous pollutant of automobile exhaust is

• a) Lead
• b) Arsenic
• c) Copper
• d) Mercury

Answer:  Lead

Question: The major source of noise pollution, world wide is due to

• a) Transport system
• b) Sugar, textile and paper industries
• c) Oil refineries and thermal power plants
• d) Office equipment

Answer: Transport system

Question: Pollutants which can be removed by a scrubber

• a) SO₂
• b) Sewage
• c) Unburnt hydrocarbon
• d) Particulate matter

Answer: SO₂

Question: Consider the following statements

a. 40% of the forest has been lost in tropics.
b. JFM was introduced in 1965 by the UNCED.
c. Bishnoi community belongs to Odisha who played a major role in conservation of forest.
d. Chipko movement started in Garhwal Himalayas.

• a) b & c are incorrect
• b) c is correct
• c) a & c are correct
• d) c & d are correct

Answer: b & c are incorrect

Question: In a polluted lake

• a) BOD is high and DO is low
• b) BOD is low and DO is high
• c) BOD and DO are high
• d) Both are low

Answer: BOD is high and DO is low

Question: In automobiles catalytic converters change unburnt hydrocarbons into

• a) Carbon dioxide and water
• b) Carbon dioxide and methane
• c) Methane
• d) Carbon monoxide

Answer: Carbon dioxide and water

Question: Which of the following is correct?

• a) CFC is discharged in the lower part of the atmosphere, move upward and reach stratosphere
• b) Montreal protocol was signed to reduce CO₂
• c) Ozone hole is a small pore created in tropospheric ozone layer
• d) Jhum cultivation is a method of afforestation

Answer: CFC is discharged in the lower part of the atmosphere, move upward and reach stratosphere

Question: Black foot disease is due to

• a) Arsenic
• b) Cooper
• c) Mercury
• d) Oil spills

Answer: Arsenic

Question:  __________ is highly hazardous to animal health but on plants this gas does not seen to show adverse effect

• a) CO
• b) CO₂
• c) SO₂
• d) NO₂

Answer: CO

Question: NO_x contributes to all, except

• a) Pheophytization
• b) Secondary pollutant formation
• c) Acid rains
• d) Photochemical smog

Answer: Pheophytization

Question: Which of the following device can control air pollution?

• a) Both
• b) Scrubbers
• c) Electrostatic precipitator
• d) None of these

Answer:  Both

Question: Acoustic zoning is related with

• a) Noise pollution
• b) Water Pollution
• c) Air pollution
• d) Soil pollution

Answer: Noise pollution

Question: Which one of the following pair is not correctly matched?

• a) Byssinosis – Lung fibrosis due to iron particles
• b) NEERI – Nagpur
• c) Hay fever – Skin allergy and asthma
• d) Photochemical smog – Inhibits ETS

Answer:  Byssinosis – Lung fibrosis due to iron particles

Question: Acid rain

(a) Causes necrosis
(b) Convert chlorophyll-a into phaeophytin
(c) Responsible for formation of PAN

• a) Only (a) and (b) are correct
• b) Only (a) is correct
• c) Only (b) and (c) are correct
• d) Only (c) is correct

Answer: Only (a) and (b) are correct

Question: Which is not an effect of acidic rain in a pond?

• a) Increased growth of green algae
• b) Increased fungal growth
• c) Decreased insect population
• d) None of these

Answer: Increased growth of green algae

Question: A chemical weed in troposphere and protectant in stratosphere is

• a) O₃
• b) CFC
• c) NO₂
• d) NO₃

Answer:  O₃

Question:  Eutrophication includes all, except

• a) Finally decreased COD
• b) Decreased DO
• c) Death of submerged organism
• d) Heavy growth of BGA

Answer: Finally decreased COD

Question: Presence of E.coli in water indicates

• a) Faecal pollution
• b) Water is clear
• c) Water is fully polluted
• d) Inorganic pollution

Answer: Faecal pollution

Question: Release of phosphates and nitrates in water bodies (i.e., in rivers and lakes) leads to

• a) Increased algal growth
• b) Nutrient enrichment (eutrophication)
• c) Reduced algal growth
• d) Increased growth of decomposers

Answer:  Increased algal growth

Question: Spraying of pesticide is an example of

• a) Diffuse water pollution
• b) Pyrolysis
• c) Point source water pollution
• d) None of these

Answer: Diffuse water pollution

Question: Select the correct statement from the following

• a) High concentrations of DDT disturb calcium metabolism in birds.
• b) A mere 0.1% impurities cannot make domestic sewage unfit for human use
• c) Phaeophytization in lichens is caused due to nitrogen oxides
• d) ‘Bad’ ozone as well as ‘good’ ozone both are found in the upper part of the atmosphere

Answer: High concentrations of DDT disturb calcium metabolism in birds.

Question: Which one of the following pairs is not correctly matched?

• a) Decrease in BOD of pond water – Increase in global temperature
• b) Eutrophication – Increase in nitrogen and phosphorus content in aquatic bodies
• c) Depletion of ozone layer – Release of CFCs in the atmosphere
• d) Production of sulphur dioxide – Burning of coal

Answer: Decrease in BOD of pond water – Increase in global temperature

Question: Water pollution is best assessed by determining

• a) BOD and turbidity
• b) Hardness and alkalinity
• c) DO
• d) DO and acidity

Answer: BOD and turbidity

Question: Non-point source of water pollution is

• a) Agricultural runoff
• b) Sewage outlet
• c) Effluents from a factory
• d) All of these

Answer: Agricultural runoff

Question: DO(dissolved O₂) of water ______ with an increase in temperature

• a) Decreases
• b) Increases
• c) First increases then decreases
• d) Remains constant

Answer: Decreases

Question: The controlled aerobic combustion of wastes inside chambers at temperature of 900-1300ºC is known as

• a) Incineration
• b) Recycling
• c) Pyrolysis
• d) Sanitary dumping

Answer: Incineration

Question: Ecological backlash (or Ecological Boomerang) is

• a) Production of adverse ecological effect by a previously useful chemical
• b) Formation of secondary pollutant from reaction of primary pollutants
• c) Production of useful ecological effect by a previously useful chemical
• d) Heat emission due to bomb explosion

Answer: Production of adverse ecological effect by a previously useful chemical

Question: Oil slick causes mass scale death of fishes due to

• a) Clogging of gills
• b) Non-availability of food
• c) Disruption of food chain
• d) All of these

Answer: Clogging of gills

Question: Wastes may be sealed in concrete-filled drums and discharged to a depth of about 500 m. This specific statement is true for

• a) All radioactive pollutants
• b) 

  

• c)

  

• d) U.V. radiation pollutants

Answer: All radioactive pollutants

Question: Select the incorrect statement for e-wastes

• a) Bulk of the waste is biodegradable
• b) They are buried in landfills or incinerated
• c) Recycling is the only solution for treatment
• d) Used to recover metals like copper, iron, silicon, nickel and gold

Answer: Bulk of the waste is biodegradable

Question: Select incorrect one

• a) I.A.P. – Indian Atmospheric Pollution
• b) U.N.E.P. – United Nation’s Environment Programme
• c) C.C.C. – Convention on Climate Change
• d) O.D.P. – Ozone Depleting Potential

Answer: I.A.P. – Indian Atmospheric Pollution

Question: Reduction in soil fertility due to erosion is an example of

• a) Negative pollution
• b) Positive pollution
• c) Third pollution
• d) Landscape pollution

Answer: Negative pollution

Question: The e-wastes

• a) Are buried in land fills or incinerated
• b) Is produced in developing countries and exported to developed countries
• c) Represents municipal solid
• d) Does not involve recycling

Answer: Are buried in land fills or incinerated