Environmental Issues Practice Questions - DPP for NEET

 Page 1


1. Acid rains are produced by
(a) excess emissions of NO
2 
and SO
2 
from burning fossil
fuels
(b) excess production of NH
3
 by industry and coal gas
(c) excess release of carbon monoxide by incomplete
combustion
(d) excess formation of CO
2
 by combustion and animal
respiration
2. DDT residues are rapidly passed through food chain causing
biomagnification because DDT is
(a) moderately toxic
(b) non-toxic to aquatic animals
(c) water soluble
(d) lipo soluble
3. Which of these is a pollution related to occupational health
hazard disease ?
(a) Pneumoconiosis (b) Asthma
(c) Flurosis (d) Silicosis
4. Secondary sewage treatment is mainly a
(a) physical process (b) mechanical process
(c) chemical process (d) biological process
5. Biochemical Oxygen Demand (BOD) in a river water
(a) has no relationship with concentration of oxygen in
the water.
(b) gives a measure of  Salmonella in the water.
(c) increases when sewage gets mixed with river water.
(d) remains unchanged when algal bloom occurs.
6. Today , concentration of green house gases is high because of
(a) Use of refrigerator
(b) Increased combustion of oil and coal
(c) Deforestation
(d) All the above
7. The electrostatic precipitator is used for removing particulate
matter from
(a) Exhaust of the thermal power plant
(b) Exhaust from the automobiles
(c) Industrial effluents
(d) Kitchen waste
Page 2


1. Acid rains are produced by
(a) excess emissions of NO
2 
and SO
2 
from burning fossil
fuels
(b) excess production of NH
3
 by industry and coal gas
(c) excess release of carbon monoxide by incomplete
combustion
(d) excess formation of CO
2
 by combustion and animal
respiration
2. DDT residues are rapidly passed through food chain causing
biomagnification because DDT is
(a) moderately toxic
(b) non-toxic to aquatic animals
(c) water soluble
(d) lipo soluble
3. Which of these is a pollution related to occupational health
hazard disease ?
(a) Pneumoconiosis (b) Asthma
(c) Flurosis (d) Silicosis
4. Secondary sewage treatment is mainly a
(a) physical process (b) mechanical process
(c) chemical process (d) biological process
5. Biochemical Oxygen Demand (BOD) in a river water
(a) has no relationship with concentration of oxygen in
the water.
(b) gives a measure of  Salmonella in the water.
(c) increases when sewage gets mixed with river water.
(d) remains unchanged when algal bloom occurs.
6. Today , concentration of green house gases is high because of
(a) Use of refrigerator
(b) Increased combustion of oil and coal
(c) Deforestation
(d) All the above
7. The electrostatic precipitator is used for removing particulate
matter from
(a) Exhaust of the thermal power plant
(b) Exhaust from the automobiles
(c) Industrial effluents
(d) Kitchen waste
B-150
DPP/ CB38
8. Photochemical smog formed in congested metropolitan cities
mainly consists of
(a) Ozone, peroxyacetyl nitrate and NOX
(b) Smoke, peroxyacetyl nitrate and SO
2
(c) Hydrocarbons, SO
2
 and CO
2
(d) Hydrocarbon, ozone and SOX
9. Ozone hole means
(a) hole in the ozone layer in stratosphere.
(b) decrease in the thickness of ozone in the stratosphere.
(c) decrease in concentration of ozone in trophosphere.
(d) increase in the concentration of ozone in trophosphere.
10. 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.
(a) (i) and (iii) (b) (i), (ii) and (iv)
(c) (iii) and (iv) (d) (ii), (iii) and (iv)
11. Wildlife is destroyed most when
(a) there is lack of proper care
(b) mass scale hunting for foreign trade
(c) its natural habitat is destroyed
(d) natural calamity occurs
12. The ‘Earth Summit’ held at Rio de Janerio in 1992 resulted
into
(a) Compilation of Red list
(b) Establishment of Biosphere Reserves
(c) Convention on Biodiversity
(d) Development of Hot  Spots of Biodiversity
13. Which one of the following expanded forms of the following
acronyms is correct?
(a) IPCC = International Panel for Climate
Change
(b) UNEP = United Nations Environmental
 Policy
(c) EP A = Environmental Pollution
 Agency
(d) IUCN = International Union for
Conservation of Nature and
Natural Resources
14. Photochemical smog pollution does not contain
(a) Nitrogen dioxide
(b) Carbon dioxide
(c) P AN (peroxy acetyl nitrate)
(d) Ozone
15. When huge amount of sewage is dumped into a river, its
B .O.D. will
(a) increase (b) decrease
(c) sharply decrease (d) remain unchanged
16. Which of the following statements is correct?
(a) Primary pollutants are more harmful than secondary
pollutants.
(b) Primary pollutants and secondary pollutants are
equally harmful.
(c) Secondary pollutants are more harmful than primary
pollutants.
(d) DDT is a secondary pollutant
17. Which one of the following statements is incorrect regarding
Bhopal gas tragedy?
(a) Methyl isocyanate gas leakage took place
(b) Thousands of human beings died
(c) Radioactive fall out engulfed Bhopal
(d) It took place in the night of December 2/3, 1984
18. Lichens are the indicators of
(a) water pollution
(b) air pollution
(c) soil pollution
(d) all of these.
19. Noise pollution may cause nervousness and irritability by
stimulating the secretion of
(a) thyroid hormone
(b) adernaline hormone
(c) parathyroid hormone
(d) none of these
20. Atmospheric pollutant is –
(a) 0.0034% CO
2
(b) 0.034% CO
2
(c) 0.34% CO
2
(d) 3.4% CO
2
Page 3


1. Acid rains are produced by
(a) excess emissions of NO
2 
and SO
2 
from burning fossil
fuels
(b) excess production of NH
3
 by industry and coal gas
(c) excess release of carbon monoxide by incomplete
combustion
(d) excess formation of CO
2
 by combustion and animal
respiration
2. DDT residues are rapidly passed through food chain causing
biomagnification because DDT is
(a) moderately toxic
(b) non-toxic to aquatic animals
(c) water soluble
(d) lipo soluble
3. Which of these is a pollution related to occupational health
hazard disease ?
(a) Pneumoconiosis (b) Asthma
(c) Flurosis (d) Silicosis
4. Secondary sewage treatment is mainly a
(a) physical process (b) mechanical process
(c) chemical process (d) biological process
5. Biochemical Oxygen Demand (BOD) in a river water
(a) has no relationship with concentration of oxygen in
the water.
(b) gives a measure of  Salmonella in the water.
(c) increases when sewage gets mixed with river water.
(d) remains unchanged when algal bloom occurs.
6. Today , concentration of green house gases is high because of
(a) Use of refrigerator
(b) Increased combustion of oil and coal
(c) Deforestation
(d) All the above
7. The electrostatic precipitator is used for removing particulate
matter from
(a) Exhaust of the thermal power plant
(b) Exhaust from the automobiles
(c) Industrial effluents
(d) Kitchen waste
B-150
DPP/ CB38
8. Photochemical smog formed in congested metropolitan cities
mainly consists of
(a) Ozone, peroxyacetyl nitrate and NOX
(b) Smoke, peroxyacetyl nitrate and SO
2
(c) Hydrocarbons, SO
2
 and CO
2
(d) Hydrocarbon, ozone and SOX
9. Ozone hole means
(a) hole in the ozone layer in stratosphere.
(b) decrease in the thickness of ozone in the stratosphere.
(c) decrease in concentration of ozone in trophosphere.
(d) increase in the concentration of ozone in trophosphere.
10. 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.
(a) (i) and (iii) (b) (i), (ii) and (iv)
(c) (iii) and (iv) (d) (ii), (iii) and (iv)
11. Wildlife is destroyed most when
(a) there is lack of proper care
(b) mass scale hunting for foreign trade
(c) its natural habitat is destroyed
(d) natural calamity occurs
12. The ‘Earth Summit’ held at Rio de Janerio in 1992 resulted
into
(a) Compilation of Red list
(b) Establishment of Biosphere Reserves
(c) Convention on Biodiversity
(d) Development of Hot  Spots of Biodiversity
13. Which one of the following expanded forms of the following
acronyms is correct?
(a) IPCC = International Panel for Climate
Change
(b) UNEP = United Nations Environmental
 Policy
(c) EP A = Environmental Pollution
 Agency
(d) IUCN = International Union for
Conservation of Nature and
Natural Resources
14. Photochemical smog pollution does not contain
(a) Nitrogen dioxide
(b) Carbon dioxide
(c) P AN (peroxy acetyl nitrate)
(d) Ozone
15. When huge amount of sewage is dumped into a river, its
B .O.D. will
(a) increase (b) decrease
(c) sharply decrease (d) remain unchanged
16. Which of the following statements is correct?
(a) Primary pollutants are more harmful than secondary
pollutants.
(b) Primary pollutants and secondary pollutants are
equally harmful.
(c) Secondary pollutants are more harmful than primary
pollutants.
(d) DDT is a secondary pollutant
17. Which one of the following statements is incorrect regarding
Bhopal gas tragedy?
(a) Methyl isocyanate gas leakage took place
(b) Thousands of human beings died
(c) Radioactive fall out engulfed Bhopal
(d) It took place in the night of December 2/3, 1984
18. Lichens are the indicators of
(a) water pollution
(b) air pollution
(c) soil pollution
(d) all of these.
19. Noise pollution may cause nervousness and irritability by
stimulating the secretion of
(a) thyroid hormone
(b) adernaline hormone
(c) parathyroid hormone
(d) none of these
20. Atmospheric pollutant is –
(a) 0.0034% CO
2
(b) 0.034% CO
2
(c) 0.34% CO
2
(d) 3.4% CO
2
DPP/ CB38
B-151
21. Given pie-diagram represents the relative contribution of
various GHGz to total global warming. Select the correct
statement(s) regarding A, B and C.
14%
6%
NO
2
60%
20%
A
B
C
(a) A is the gas which is produced during the combustion
of fossil fuels.
(b) B are the chemicals which are used as coolants in
refrigerators
(c) C is the gas which is the major constituent of biogas
(d) All of these
22. Which of the following can cause DNA damage and
mutations in humans?
(a) Absorption of  UV -A and UV -B
(b) Absorption of  UV -B
(c) Absorption of  UV -A
(d) Absorption of  UV-A and UV -C
23. Which of the following statements is not correct regarding
jhum cultivation?
(a) It is also called as shifting cultivation and has resulted
in deforestation
(b) It helps in increasing crop yield to a considerable extent.
(c) A time-gap of several years is required for the recovery
of the land after cultivation.
(d) It involves cutting down of trees of the forest, burning
of the plant remains and then using the land for farming.
24. Which of the following statement is incorrect ?
(a) Carbon monoxide is the major environment pollutant
(b) All pollutants are not waste
(c) Nitrogen and magnesium can pollute water
(d) Lichens are affected by sulphur
25. Noise pollution is created if noise is in excess to –
(a) 70-75 dB (b) 50-60 dB
(c) 80-99 dB (d) 40-65 dB
26. Which of the following does not cause pollution ?
(a) Thermal power project (b) Steel power plant
(c) Automobiles (d) Hydro electric project
27. Eutrophication causes reduction in
(a) dissolved CO
2
(b) dissolved O
2
(c) dissolved nutrients (d) none of the above
28. It is said, the Taj Mahal may be destroyed due to
(a) Flood in Y amuna 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
29. The scrubber is used mainly to remove the following gas/es
from the exhaust after spraying water/ lime
(a) CO
2
(b) SO
2
(c)O
2
 & N
2
(d) CO & CO
2
30. Volcano is _____________ source of pollution.
(a) artificial (b) natural
(c) Both (a) and (b) (d) man-made
31. Montreal Protocol was called to check emission of
(a) e-wastes (b) UV radiation
(c) CFCs (d) All of these
32. Which of the following is normally not an atmosphere
pollutant ?
(a) CO
2
(b) SO
2
(c) Hydrogen (d) CO
33. Which of the following is not properly matched
(a) Formaldehyde - carcinogenic
(b) Sulphur dioxide - respiratory problems
(c) Nitrogen oxide - brown air
(d) Mean annual temperature - 25° C
34. Cleaning Environment with biological options such as
microbes and plants is called
(a) Bioremediation (b) Biotechnology
(c) Biowarfare (d) Incineration
35. The ‘Jhum cultivation’ in India is practiced in
(a) North- East states (b) South–West coast
(c) South- East coast (d) Gangetic plain
36. Why is the concentration of ozone is less over the north
and south poles ?
(a) CFCs accumulate only in area where the air is cold
(b) CFC use is highest in these areas
(c) CFCs stick to frozen water vapour and are able to act
catalysts
(d) UV rays are stronger in the atmosphere
Page 4


1. Acid rains are produced by
(a) excess emissions of NO
2 
and SO
2 
from burning fossil
fuels
(b) excess production of NH
3
 by industry and coal gas
(c) excess release of carbon monoxide by incomplete
combustion
(d) excess formation of CO
2
 by combustion and animal
respiration
2. DDT residues are rapidly passed through food chain causing
biomagnification because DDT is
(a) moderately toxic
(b) non-toxic to aquatic animals
(c) water soluble
(d) lipo soluble
3. Which of these is a pollution related to occupational health
hazard disease ?
(a) Pneumoconiosis (b) Asthma
(c) Flurosis (d) Silicosis
4. Secondary sewage treatment is mainly a
(a) physical process (b) mechanical process
(c) chemical process (d) biological process
5. Biochemical Oxygen Demand (BOD) in a river water
(a) has no relationship with concentration of oxygen in
the water.
(b) gives a measure of  Salmonella in the water.
(c) increases when sewage gets mixed with river water.
(d) remains unchanged when algal bloom occurs.
6. Today , concentration of green house gases is high because of
(a) Use of refrigerator
(b) Increased combustion of oil and coal
(c) Deforestation
(d) All the above
7. The electrostatic precipitator is used for removing particulate
matter from
(a) Exhaust of the thermal power plant
(b) Exhaust from the automobiles
(c) Industrial effluents
(d) Kitchen waste
B-150
DPP/ CB38
8. Photochemical smog formed in congested metropolitan cities
mainly consists of
(a) Ozone, peroxyacetyl nitrate and NOX
(b) Smoke, peroxyacetyl nitrate and SO
2
(c) Hydrocarbons, SO
2
 and CO
2
(d) Hydrocarbon, ozone and SOX
9. Ozone hole means
(a) hole in the ozone layer in stratosphere.
(b) decrease in the thickness of ozone in the stratosphere.
(c) decrease in concentration of ozone in trophosphere.
(d) increase in the concentration of ozone in trophosphere.
10. 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.
(a) (i) and (iii) (b) (i), (ii) and (iv)
(c) (iii) and (iv) (d) (ii), (iii) and (iv)
11. Wildlife is destroyed most when
(a) there is lack of proper care
(b) mass scale hunting for foreign trade
(c) its natural habitat is destroyed
(d) natural calamity occurs
12. The ‘Earth Summit’ held at Rio de Janerio in 1992 resulted
into
(a) Compilation of Red list
(b) Establishment of Biosphere Reserves
(c) Convention on Biodiversity
(d) Development of Hot  Spots of Biodiversity
13. Which one of the following expanded forms of the following
acronyms is correct?
(a) IPCC = International Panel for Climate
Change
(b) UNEP = United Nations Environmental
 Policy
(c) EP A = Environmental Pollution
 Agency
(d) IUCN = International Union for
Conservation of Nature and
Natural Resources
14. Photochemical smog pollution does not contain
(a) Nitrogen dioxide
(b) Carbon dioxide
(c) P AN (peroxy acetyl nitrate)
(d) Ozone
15. When huge amount of sewage is dumped into a river, its
B .O.D. will
(a) increase (b) decrease
(c) sharply decrease (d) remain unchanged
16. Which of the following statements is correct?
(a) Primary pollutants are more harmful than secondary
pollutants.
(b) Primary pollutants and secondary pollutants are
equally harmful.
(c) Secondary pollutants are more harmful than primary
pollutants.
(d) DDT is a secondary pollutant
17. Which one of the following statements is incorrect regarding
Bhopal gas tragedy?
(a) Methyl isocyanate gas leakage took place
(b) Thousands of human beings died
(c) Radioactive fall out engulfed Bhopal
(d) It took place in the night of December 2/3, 1984
18. Lichens are the indicators of
(a) water pollution
(b) air pollution
(c) soil pollution
(d) all of these.
19. Noise pollution may cause nervousness and irritability by
stimulating the secretion of
(a) thyroid hormone
(b) adernaline hormone
(c) parathyroid hormone
(d) none of these
20. Atmospheric pollutant is –
(a) 0.0034% CO
2
(b) 0.034% CO
2
(c) 0.34% CO
2
(d) 3.4% CO
2
DPP/ CB38
B-151
21. Given pie-diagram represents the relative contribution of
various GHGz to total global warming. Select the correct
statement(s) regarding A, B and C.
14%
6%
NO
2
60%
20%
A
B
C
(a) A is the gas which is produced during the combustion
of fossil fuels.
(b) B are the chemicals which are used as coolants in
refrigerators
(c) C is the gas which is the major constituent of biogas
(d) All of these
22. Which of the following can cause DNA damage and
mutations in humans?
(a) Absorption of  UV -A and UV -B
(b) Absorption of  UV -B
(c) Absorption of  UV -A
(d) Absorption of  UV-A and UV -C
23. Which of the following statements is not correct regarding
jhum cultivation?
(a) It is also called as shifting cultivation and has resulted
in deforestation
(b) It helps in increasing crop yield to a considerable extent.
(c) A time-gap of several years is required for the recovery
of the land after cultivation.
(d) It involves cutting down of trees of the forest, burning
of the plant remains and then using the land for farming.
24. Which of the following statement is incorrect ?
(a) Carbon monoxide is the major environment pollutant
(b) All pollutants are not waste
(c) Nitrogen and magnesium can pollute water
(d) Lichens are affected by sulphur
25. Noise pollution is created if noise is in excess to –
(a) 70-75 dB (b) 50-60 dB
(c) 80-99 dB (d) 40-65 dB
26. Which of the following does not cause pollution ?
(a) Thermal power project (b) Steel power plant
(c) Automobiles (d) Hydro electric project
27. Eutrophication causes reduction in
(a) dissolved CO
2
(b) dissolved O
2
(c) dissolved nutrients (d) none of the above
28. It is said, the Taj Mahal may be destroyed due to
(a) Flood in Y amuna 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
29. The scrubber is used mainly to remove the following gas/es
from the exhaust after spraying water/ lime
(a) CO
2
(b) SO
2
(c)O
2
 & N
2
(d) CO & CO
2
30. Volcano is _____________ source of pollution.
(a) artificial (b) natural
(c) Both (a) and (b) (d) man-made
31. Montreal Protocol was called to check emission of
(a) e-wastes (b) UV radiation
(c) CFCs (d) All of these
32. Which of the following is normally not an atmosphere
pollutant ?
(a) CO
2
(b) SO
2
(c) Hydrogen (d) CO
33. Which of the following is not properly matched
(a) Formaldehyde - carcinogenic
(b) Sulphur dioxide - respiratory problems
(c) Nitrogen oxide - brown air
(d) Mean annual temperature - 25° C
34. Cleaning Environment with biological options such as
microbes and plants is called
(a) Bioremediation (b) Biotechnology
(c) Biowarfare (d) Incineration
35. The ‘Jhum cultivation’ in India is practiced in
(a) North- East states (b) South–West coast
(c) South- East coast (d) Gangetic plain
36. Why is the concentration of ozone is less over the north
and south poles ?
(a) CFCs accumulate only in area where the air is cold
(b) CFC use is highest in these areas
(c) CFCs stick to frozen water vapour and are able to act
catalysts
(d) UV rays are stronger in the atmosphere
Space for Rough Work
B-152
DPP/ CB38
RESPONSE
GRID
37. 38. 39. 40. 41.
42. 43. 44. 45.
37. The waste water from Industries may contain toxic heavy
metals having density of more than
(a) 5 g / cm
3
(b) 10 g /cm
3
(c) 2 g /cm
3
(d) 15 g /cm
3
38. DDT causes egg shell thinning in birds because it inhibits
(a) calmodulin (b) calcium A TPase
(c) magnesium A TPase (d) carbonic anhydrase
39. FOAM (Friends of the Arcata Marsh) is a group of citizens
responsible for the integrated process of
(a) reducing eutrophication
(b) sewage and water treatment
(c) radio- active waste treatment
(d) minimizing global warming
40. Without Green house effect the average temperature of earth
surface would have been
(a) 18 °C (b) 8 °C
(c) – 8°C (d) –18°C
41. Read the following statements.
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 intially
thereby greatly reducing photosynthesis.
Which two of the above were the main causes of fish
mortality in the lake ?
(a) (i) and (iii) (b) (i) and (ii)
(c) (ii) and (iii) (d) (iii) and (iv)
42. Match column-I with column-II and select the correct option.
Column-I Column-II
A. Catalytic converter I. Particulate matter
B . Electrostatic II. Carbon monoxide and
precipitator nitrogen oxides
C . Earmuffs III. High noise level
D. Land fills IV. Solid wastes
(a) A-I; B-II; C-III; D-IV
(b) A-II; B-I; C-III; D-IV
(c) A-IV; B-III; C-II; D-I
(d) A-III; B-II; C-IV; D-I
43. The given diagram shows electrostatic precipitator. Identify
A, B and C.
(a) A - Discharge corona, B - Negatively charged wire,
C - Collection plate grounded
(b) A - Discharge corona, B - Positively charged wire,
C - Collection plate grounded
(c) A - Discharge corona, B - Negatively charged wire,
C - Collection plate burnt
(d) A - Uncharge corona, B - Positively charged wire,
C - Collection plate never grounded
44. Which of the following statements is/are correct about ‘Eco
San’ toilets?
(a) It is a sustainable system for handling human excreta
or faecal matter by using dry ‘composting toilets’.
(b) These are very useful for the rural areas where sewer
systems are not possible.
(c) These toilets are hygienic, efficient, practical & most
effective for the disposal of human waste.
(d) All of the above
45. Algal blooms impart a distinct colour to water due to
(a) their pigments.
(b) excretion of coloured substances.
(c) formation of coloured chemicals in water facilitated by
physiological degradation of algae.
(d) absorption of light by algal cell wall.
Total Questions 45 Total Marks 180
Attempted Correct
Incorrect Net Score
Cut-off Score 40 Qualifying Score 60
Success Gap = Net Score – Qualifying Score
Net Score = (Correct × 4) – (Incorrect × 1)
DAILY PRACTICE PROBLEM DPP CHAPTERWISE 38 - BIOLOGY
Space for Rough Work