NEET Biology Multiple Choice Questions – Environmental Issues

NEET Biology Environment Pollution And Global Environment Issues Multiple Choice Questions

Question 1. Excess nitrates in the field get mixed up with drinking water. It may result in:

1. Killing of intestinal bacteria
2. Upsetting enzyme production
3. Converting nitrates into nitrites harms haemoglobin leading to anaemia
4. Producing more amino acids.

Answer: 3. Converting nitrates into nitrites harms haemoglobin leading to anaemia

Question 2. Global warming can be controlled by:

1. Reducing reforestation, increasing the use of fossil fuel.
2. Increasing deforestation, slowing down the growth of the human population
3. Increasing deforestation, reducing the efficiency of energy usage
4. Reducing deforestation, cutting down the use of fossil fuel.

Answer: 4. Reducing deforestation, cutting down the use of fossil fuel.

Question 3. The Air Prevention and Control of Pollution Act came into force in:

1. 1981
2. 1985
3. 1990
4. 1975

Answer: 1. 1981

Question 4. Water pollution can be stopped best by:

1. Treating effluents to remove injurious chemicals
2. Rearing more fishes
3. Cultivating useful water plants
4. Spraying with DDT.

Answer: 1. Treating effluents to remove injurious chemicals

Read and Learn More NEET Biology Multiple Choice Question and Answers

Question 5. Organic waste products:

1. Should be buried deep in the soil
2. Can be used for the production of energy
3. Should be treated with chemicals to prevent the breeding of organisms
4. Should be dumped into the sea

Answer: 2. Can be used for the production of energy

NEET Biology MCQs

Question 6. Noise pollution causes:

1. Deafness
2. Increase in B.P.
3. Heart trouble
4. All the above.

Answer: 4. All the above.

Question 7. During the combustion of fuels, gases released are :

1. CO₂ and CO
2. CO₂ and CO₂ and SO₂
3. CO₂, CO, SO₂ and H₂O
4. CO₂, CO, H₂S and SO₂

Answer: 3. CO₂, CO, SO₂ and H₂O

Question 8. The environmental pollutant that can cause birth defects is:

1. SO₂
2. CO
3. Smog
4. Radioactivity.

Answer: 4. Radioactivity.

Question 9. As a general rule, ionizing radiation is most damaging to:

1. Mature, stable cells
2. Actively dividing cells
3. Highly specialized cells
4. Cells in which food is stored.

Answer: 2. Actively dividing cells

NEET Biology MCQs

Question 10. It is said that Taj may be destroyed due to:

1. Flood in Yamuna River
2. The decomposition of marble as a result of high-temperature
3. Air pollutants released from the oil refinery of Mathura
4. All of the above.

Answer: 3. Air pollutants released from the oil refinery of Mathura

Question 11. Which of the following is normally not an atmospheric pollutant?

1. Hydrocarbon
2. CO₂
3. CO
4. SO₂

Answer: 2. CO₂

Question 12. The presence of ozone in the atmosphere of Earth:

1. Hinders a higher rate of photosynthesis
2. Has been responsible for increasing the average global temperature in the recent past
3. Helps in checking the ultraviolet rays to reach earth
4. Is advantageous since it supplies oxygen for people travelling in jets.

Answer: 3. Helps in checking the ultraviolet rays to reach earth

Question 13. What will happen if our water resources continue to be polluted by industrial wastes?

1. Sufficient food will not be available to water organisms
2. Sufficient O₂ will not be available to water organisms
3. B.O.D. value of water will decrease
4. Drinking water will not be available.

Answer: 2. Sufficient O₂ will not be available to water organisms

NEET Biology MCQs

Question 14. In Bhopal gas tragedy, the gas released was:

1. Methyl isocyanate
2. Ethyl isocyanate
3. Sodium isocyanate
4. Potassium isocyanate.

Answer: 1. Methyl isocyanate

Question 15. Aerosols are:

1. Chemicals released in the air in the form of mist or vapour with force
2. Gases released from the exhaust pump
3. A mixture of carbon particles and mist
4. Soluble effluents are released in water.

Answer: 1. Chemicals released in the air in the form of mist or vapour with force

Question 16. The component of living cells affected by pollutant SO₂ is:

1. Nucleus
2. All cell membrane system
3. Cell wall
4. Membrane system.

Answer: 2. All cell membrane system

Question 17. The ‘Love Canal Incidence’ is concerned with:

1. Chemical plant accident
2. River pollution
3. Toxic waste dump
4. Man-made bacteria.

Answer: 3. Toxic waste dump

NEET Biology MCQs

Question 18. The “solution to pollution is dilution.” This can be best correlated to

1. Air pollution
2. Water pollution
3. Noise pollution
4. Satiation pollution.

Answer: 2. Water pollution

Question 19. Which of the following pollutants is not produced by the exhaust of motor vehicles?

1. CO
2. Hydrocarbon
3. Flyash
4. SO₂

Answer: 3. Flyash

Question 20. Minamata disease is a pollution-related disease which results from:

1. Release of industrial waste mercury into fishing water
2. Oil spills into the sea
3. Accumulation of arsenic in the atmosphere
4. Release of human organic wastes into drinking water.

Answer: 1. Release of industrial waste mercury into fishing water

Question 21. The most outstanding danger at present for the survival of living beings on the earth is:

1. Radiation hazard
2. Automobiles
3. Industrial effluents
4. Detergents

Answer: 1. Radiation hazard

Question 22. What does the term ‘overkill’ deal with?

1. Pesticide poisoning
2. Soil erosion
3. Nuclear holocaust
4. Global warming.

Answer: 3. Nuclear holocaust

Question 23. Radiation is a health hazard because it causes:

1. Haemophilia
2. Leukaemia
3. Pneumonia
4. Polio.

Answer: 2. Leukaemia

Ecology And Environment NEET MCQs

Question 24. In which industry, do workers suffer from Byssinosis?

1. Cardboard
2. Textile
3. Plastic
4. Paper.

Answer: 2. Textile

Question 25. Spraying of DDT on crops produces pollution of:

1. Air only
2. Air and soil
3. Air, soil and water
4. Air and water.

Answer: 3. Air, soil and water

Question 26. The most widely existing pollutants in the air are:

1. CO
2. CO₂
3. SO₂
4. None of the above.

Answer: 1. CO

Question 27. If water pollution continues at its present rate, it will eventually:

1. Stop the water cycle
2. Prevent precipitation
3. Make oxygen molecules unavailable to aquatic life
4. Make nitrates unavailable to aquatic life.

Answer: 3. Make oxygen molecules unavailable to aquatic life

Question 28. Which of the following air pollutants is the chief cause of acid rain?

1. H₂S
2. CO
3. SO₂
4. CO₂

Answer: 3. SO₂

Ecology And Environment NEET MCQs

Question 29. Which part of the human body is first to be affected by nuclear radiation?

1. Bone marrow
2. Liver
3. Lungs
4. Ear.

Answer: 1. Bone marrow

Question 30. Opuntia was a menace a few decades back in India. It was almost eradicated by:

1. Spraying DDT
2. Using tractors
3. Cochineal insect introduction
4. Using 2, 4-D.

Answer: 3. Cochineal insect introduction

Question 31. Photochemical smog is caused by the formation of

1. Aluminium ions
2. Methane
3. Sulphur
4. Free radicals of oxygen.

Answer: 4. Free radicals of oxygen.

Question 32. Where did the epidemic bone softening disease ‘Itai Itai’ occur first?

1. Myanmar
2. Japan
3. South Korea
4. U.S.A.

Answer: 2. Japan

Question 33. Non-biodegradable toxic pollutants, as they pass through food webs, undergo biological:

1. Oxidation
2. Reduction
3. Magnification
4. Hydrate.

Answer: 3. Magnification

Ecology And Environment NEET MCQs

Question 34. WHO’s recommendations about the industrial noise limit is:

1. 105 dB
2. 75 dB
3. 135 dB
4. 165 dB.

Answer: 2. 75 dB

Question 35. Contamination with radioactivity is dangerous because it causes:

1. Biological magnification
2. Gene mutation
3. Photochemical smog
4. Ozone destruction.

Answer: 2. Gene mutation

Question 36. A pollutant is any substance, chemical or other factor, that changes:

1. Natural geochemical cycles
2. The natural balance of our environment
3. The natural flora of our environment
4. The natural wildlife of our region.

Answer: 2. The natural balance of our environment

Question 37. The molecular action of ultraviolet light is mainly reflected through:

1. Photodynamic action
2. Destruction of hydrogen bonds between DNA strands
3. Formation of pyrimidine
4. Destruction of ester bonds.

Answer: 2. Destruction of hydrogen bonds between DNA strands

Question 38. In big cities, automobiles are responsible for air pollution:

1. 50%
2. 70%
3. 80%
4. 100%.

Answer: 3. 80%

Question 39. An important source of aerosol in the upper atmosphere is:

1. Sea
2. Air
3. Jet aeroplane emission
4. Soil.

Answer: 3. Jet aeroplane emission

Ecology And Environment NEET MCQs

Question 40. Enriched air, if inhaled for a long time, causes:

1. Allergy
2. Bronchitis
3. Disturbance of psychomotor function
4. Diarrhoea.

Answer: 3. Disturbance of psychomotor function

Question 41. In a small town, pasture is contaminated with airborne fluorides. Grazing animals in that area will suffer from:

1. Goitre disease
2. Thyroid disease
3. Dental disease
4. Beri-beri.

Answer: 3. Dental disease

Question 42. Strengthening of the concept of environmental monitoring is due to concern for the:

1. Quality of environment
2. Quantity of environment
3. Quality of monitor
4. Pure air.

Answer: 1. Quality of environment

Question 43. Mudball technique has been proposed by:

1. Rice Research Institute, Cuttack
2. CSIR, New Delhi
3. Punjab Agriculture University, Ludhiana
4. The International Rice Research Institute in the Philippines.

Answer: 4. The International Rice Research Institute in the Philippines.

Question 44. Biomagnification is a process of:

1. Magnification of animals
2. Enlargement of aquatic animals
3. The concentration of dangerous chemicals in the body of members of the food web
4. None of the above.

Answer: 3. Concentration of dangerous chemicals into the body of members of the food web

Question 45. Environmental monitoring helps in all except in:

1. Identifying pollution problem
2. Prescribing environmental quality standards
3. Predicting pollution abatement strategies
4. Planning pollution abatement strategies.

Answer: 3. Predicting pollution abatement strategies

NEET Biology previous year MCQs

Question 46. Automobiles discharge hydrocarbons and nitrous oxide into the atmosphere which is further converted to:

1. Carbon monoxide
2. Ozone and other pollutants
3. Radioactive substance
4. Hydrochloric acid and nitrogen dioxide.

Answer: 4. Hydrochloric acid and nitrogen dioxide.

Question 47. In Kolkata, adults are suffering from bronchitis TB. it is due to:

1. Impure water
2. Adulterated food
3. Polluted air
4. Polluted soil.

Answer: 3. Polluted soil.

Question 48. Air pollution is highest in:

1. Kolkata
2. Lucknow
3. Panchmarhi
4. Bhopal.

Answer: 1. Kolkata

Question 49. Nowadays DDT is not effective in killing mosquitoes because:

1. The mosquito population has become strong
2. DDT is adulterated
3. DDT has selection pressure on the genetic variability
4. Mosquitoes have developed adaptive resistance to pesticides.

Answer: 4. Mosquitoes have developed adaptive resistance to pesticides.

Question 50. The population of hawks and eagles is declining because:

1. Of food scarcity
2. Of game lovers
3. Excessive use of poisoned pesticides
4. Very few dead animals are found in the fields.

Answer: 3. Of excessive use of poisoned pesticides

Question 51. Certain epiphytic lichens indicate changing levels of atmospheric pollution, especially of:

1. SO₂
2. CO₂
3. NO₂
4. SO₃

Answer: 1. SO₂

NEET Biology previous year MCQs

Question 52. The ozone layer is chiefly disturbed by:

1. A large number of automobiles
2. A large number of factories
3. Supersonic jets
4. Chimney exhausts.

Answer: 3. Supersonic jets

Question 53. Carbon monoxide is a very harmful pollutant because it:

1. Inactivates nerves
2. Combines with oxygen
3. Forms a stable compound with haemoglobin
4. Inhibits Krebs’ cycle.

Answer: 3. Forms a stable compound with haemoglobin

Question 54. B.O.D. of a river was found to be very low, which means water:

1. Was clean
2. Was polluted
3. Contains algae
4. Contains other dissolved minerals.

Answer: 1. Was clean

Question 55. SO₂ pollution can be controlled by all the methods except by:

1. Removing sulphur after combustion
2. Precombustion desulphurisation
3. Electricity
4. Photochemical oxidants.

Answer: 3. Electricity

Question 56. Nuclear power generates:

1. Photochemical pollution
2. SO₂ pollution
3. Air pollution
4. Thermal pollution.

Answer: 4. Thermal pollution.

Question 57. Many organic substances or organisms help in clearing the water when found in

1. High concentration
2. Low concentration
3. Moderate concentration
4. Neutral concentration.

Answer: 2. Low concentration

Question 58. When pollution load is higher in the lakes it cannot take place self-purification because:

1. There is no O₂ to sustain microbial activity
2. No sunlight is present
3. Microbes die
4. Pollutants settle down automatically.

Answer: 3. Microbes die

NEET Biology previous year MCQs

Question 59. The level of tolerance of DDT is 10 ppm in the case of Daphnia, therefore Dciphnia:

1. Can live up to this concentration
2. Will die if the concentration is lower than this
3. Can tolerate ten times more concentration of DDT than 10² ppm.
4. Cannot tolerate DDT at all.

Answer: 1. Can live up to this concentration

Question 60. A better method of pest control is:

1. The use of chemical pesticide
2. The use of radioactive substance
3. By using pesticides taking into account the number and composition of pest population
4. Use of steam.

Answer: 4. Use of steam.

Question 61. The pollutants emitted by jet aeroplanes in the outer atmosphere as fluorocarbons are known as:

1. Photochemical oxidants
2. Aerosols
3. Loess
4. Smog.

Answer: 2. Aerosols

Question 62. The chemical which causes damage to WBC, bone marrow, spleen, lymph, nodes and lungs is:

1. Iodine-131
2. Calcium
3. Strontium-90
4. Iodine-127.

Answer: 1. Iodine-131

Question 63. Name the chemicals which cause bone cancer and tissue degeneration:

1. Iodine-131
2. Strontium-90
3. Iodine-127
4. Calcium.

Answer: 2. Strontium-90

Question 64. The nuclear explosion causes mainly:

1. Noise pollution
2. Soil pollution
3. Water pollution
4. Air pollution.

Answer: 4. Air pollution.

NEET MCQs On Climate Change

Question 65. UV radiation to disinfect polluted water is not generally recommended because:

1. It has no residual germicidal effect
2. It is not effective against most micro-organisms
3. The colour and turbidity of water reduce its disinfection potential
4. Both (1) and (3).

Answer: 2. It is not effective against most micro-organisms

Question 66. UV radiations from sunlight cause the reaction that produces:

1. CO
2. SO₂
3. Ozone
4. NO₂

Answer: 3. Ozone

Question 67. What was the cause of the “Yusho” disease which occurred in 1968 from a leak in a canning factory?

1. DBCP
2. PCB
3. Formaldehyde
4. Mercury.

Answer: 2. PCB

Question 68. Which of the following is the main factor of water pollution?

1. Smoke
2. Industrial waste
3. Ammonia
4. Detergents.

Answer: 2. Industrial waste

Question 69. Activated sludge is associated with the management of waste and it is a kind of:

1. Chemical treatment
2. Mechanical means
3. Biological treatment
4. Nuclear means.

Answer: 2. Mechanical means

Question 70. Which of the following is the largest source of formaldehyde vapour pollution in a room?

1. Utensil
2. Furniture
3. Cooking Range
4. Book.

Answer: 2. Furniture

NEET MCQs On Climate Change

Question 71. The term ‘nuclear winter’ is associated with:

1. Nuclear war
2. Nuclear disarmament
3. Nuclear weapon testing
4. Aftermath of a nuclear holocaust.

Answer: 4. Aftermath of a nuclear holocaust.

Question 72. The ozone layer in the upper atmosphere is destroyed by

1. HCl
2. Photochemical smog
3. SO₂
4. Chlorofiuoro carbons.

Answer: 4. Chlorofiuoro carbons.

Question 73. The most dangerous radioactive air pollutant is:

1. Slrontium-90
2. P-32
3. S-35
4. Ca-40.

Answer: 1. Slrontium-90

Question 74. Acid rain is caused by:

1. SO₂
2. SO₂ and NO₂
3. CO₂
4. O₂

Answer: 2. SO₂ and NO₂

Question 75. Which of the following is a qualitative pollutant:

1. CO₂
2. Insecticide
3. Plastic
4. Both (2) and (3).

Answer: 3. Plastic

NEET MCQs On Climate Change

Question 76. DDT is a/an:

1. Antibiotic
2. Biodegradable pollutant
3. Non-biodegradable pollutant
4. None of the above.

Answer: 3. Non-biodegradable pollutant

Question 77. The decomposition of domestic wastes under natural processes is known as:

1. Industrial pollution
2. Thermal pollution
3. Biodegradable process
4. Non-biodegradable process.

Answer: 3. Biodegradable process

Question 78. Which of the following causes fibrosis in the lungs?

1. Lead
2. CFCs
3. Asbestos
4. DDT.

Answer: 3. Asbestos

NEET MCQs On Climate Change

Question 79. Which of the following is a secondary pollutant?

1. CCl₂F₂
2. DDT
3. (C₂H₅)₄ Pb
4. PAN.

Answer: 4. PAN

Environmental Issues MCQ NEET Question 80. The air pollution at the source can be controlled by:

1. Separating the pollutants from harmless gases
2. Converting the pollutants to innocuous products before their release in the air
3. Both of them
4. None of these.

Answer: 3. Both of them

Question 81. Biochemical oxygen demand means:

1. Amount of oxygen taken up by the micro-organisms present in water
2. Amount of oxygen released by the micro-organisms present in the water
3. Amount of nutrients taken up by the micro-organisms present in the water
4. None of these.

Answer: 1. Amount of oxygen taken up by the micro-organisms present in water

Question 82. Hot water contains dissolved oxygen and then the BOD:

1. Decreases
2. Increases
3. Stabilises
4. None of these.

Answer: 1. Decreases

Question 83. The gas which is produced in rice paddy and is associated with global warming is:

1. CH₄
2. Cl
3. CO₂
4. H₂S.

Answer: 1. CH₄

Question 84. The newspaper contains one of the following toxic materials. It is:

1. Cd
2. Pb
3. Mg
4. Hg.

Answer: 2. Pb

Question 85. Which of the following cities has the highest SO₂ pollution?

1. Milan
2. Seoul
3. New Delhi
4. New York.

Answer: 1. Milan

NEET Biology MCQs

Important NEET Questions Biology Question 86. Match the following:

1. 1 – (C), 2 – (B), 3 – (D), 4 – (A)
2. 1 – (B), 2 – (C), 3 – (A), 4 – (D)
3. 1 – (C), 2 – (D), 3 – (C), 4 – (A)
4. 1 – (D), 2 – (C), 3 – (A), 4 – (B).

Answer: 1. 1 – (C), 2 – (B), 3 – (D), 4 – (A)

Question 87. The nitrifying bacteria are:

1. Autotrophic
2. Holophytic
3. Parasitic
4. Chemosynthetic.

Answer: 4. Chemosynthetic.

Question 88. Foul smell in the water of tanks, ponds etc is due to:

1. Anaerobiosis
2. Aerobiosis
3. Biological magnification
4. Psammophytes.

Answer: 1. Anaerobiosis

NEET Biology MCQs

Question 89. Checking of reradiating heat by atmospheric dust, water vapour, ozone, CO₂ etc. is known as:

1. Greenhouse effect
2. Radioactive effect
3. Ozone layer effect
4. Solar effect.

Answer: 1. Greenhouse effect

Question 90. Photochemical smog is related to the pollution of:

1. Soil
2. Water
3. Noise
4. Air.

Answer: 4. Air.

Question 91. The most important causative pollutant of soil may be:

1. Plastics
2. Iron junks
3. Detergents
4. Glass junks.

Answer: 1. Plastics

Question 92. UV radiation from sunlight causes the reaction that produces:

1. CO
2. Ozone
3. Fluorides
4. SO₂

Answer: 2. Ozone

NEET Biology MCQs

Question 93. The greenhouse effect is enhanced in the environment by the gas:

1. CO₂
2. CO
3. Fluorocarbon
4. Methane.

Answer: 1. CO₂

Question 94. The most hazardous metal pollutant of automobile exhaust is:

1. Lead
2. Copper
3. Mercury
4. Cadmium.

Answer: 1. Lead

Question 95. Which substance provides protection from carcinogens?

1. Aflatoxin
2. Sterigmatoeytin
3. Penicillin
4. Tocopherol.

Answer: 4. Tocopherol.

Question 96. What is the main cause of desertification?

1. Developmental activities
2. Tourism
3. Overgrazing
4. Irrigated agriculture.

Answer: 1. Developmental activities

Question 97. Taj Mahal is threatened due to the effect of:

1. Chlorine
2. Sulphur dioxide
3. Oxygen
4. Hydrogen.

Answer: 2. Sulphur dioxide

Question 98. When a huge amount of sewage is dumped into a river, the BOD will:

1. Increase
2. Remain unchanged
3. Slightly decrease
4. Decrease.

Answer: 1. Increase

Question 99. “Mango necrosis” is due to:

1. CO₂
2. CO
3. PAN
4. SO₂

Answer: 4. SO₂

Question 100. Minamata disease of Japan which afflicted people with paralysis was traced to:

1. Algae contaminated with Arsenic
2. Fish contaminated with Mg
3. Fruits contaminated with Nickle
4. Rice contaminated with biofertilizer.

Answer: 2. Fish contaminated with Mg

Question 101. The green scum seen in the freshwater bodies is:

1. Blue-green algae
2. Red algae
3. Green algae
4. Both (1) and (3).

Answer: 4. Both (1) and (3)

Ecology And Environment NEET MCQs

Question 102. The loudness of a sound that a person can withstand without discomfort is about.

1. 150 dB.
2. 215 dB.
3. 30dB.
4. 80 dB.

Answer: 4. 80 dB.

Question 103. The major source of noise pollution worldwide is due to:

1. Office equipment
2. Transport system
3. Sugar, textile and paper industries
4. Oil refineries and thermal power plants.

Answer: 2. Transport system

Question 104. Match correctly the following and choose the correct option.

The correct matches is:

1. 1-C, 2-D, 3-A, 4-B
2. 1-A, 2-C, 3-B, 4-D
3. 1-D, 2-A, 3-B, 4-C
4. 1-C, 2-D, 3-B, 4-A.

Answer: 1. 1-C, 2-D, 3-A, 4-B

Question 105. Catalytic converters are fitted into automobiles to reduce the emission of harmful gases. Catalytic converters change unburnt hydrocarbons into:

1. Carbon dioxide and water
2. Carbon mono oxide
3. Methane
4. Carbon dioxide and methane.

Answer: 1. Carbon dioxide and water

Question 106. Why is it necessary to remove sulphur from petroleum products?

1. To reduce the emission of sulphur dioxide in exhaust fumes
2. To increase the efficiency of automobile engines
3. To use sulphur removed from petroleum for commercial purposes
4. To increase the life span of engine silencers.

Answer: 1. To reduce the emission of sulphur dioxide in exhaust fumes

Question 107. Which one of the following impurities is easiest to remove from wastewater?

1. Bacteria
2. Colloids
3. Dissolved solids
4. Suspended solids.

Answer: 4. Suspended solids.

Environmental Issues MCQ NEET Question 108. Which one of the following diseases is not due to contamination of water?

1. Hepatitis-B
2. Jaundice
3. Cholera
4. Typhoid.

Answer: 1. Hepatitis-B

Question 109. Nuisance growth of aquatic plants and bloom-forming algae in natural waters is generally due to high concentrations of:

1. Carbon
2. Sulphur
3. Calcium
4. Phosphorus.

Answer: 4. Phosphorus.

Question 110. Algal blooms impart a distinct colour to water due to:

1. Their pigments
2. Excretion of coloured substances
3. Formation of coloured chemicals in water facilitated by physiological degradation of algae.
4. Absorption of light by algal cell wall.

Answer: 1. Their pigments

Question 111. Match the items in column A and column B and choose the correct option:

1. 1 – B, 2 – A, 3 – D, 4 – C
2. 1 – C, 2 – B, 3 – D, 4 – A
3. 1 – C, 2 – D, 3 – A, 4 – B
4. 1 – C, 2 – A, 3 – D, 4 – A.

Answer: 3. 1 – C, 2 – D, 3 – A, 4 – B

Question 112. In the textbook, you came across the Three Mile Island and Chornobyl disasters associated with the accidental leakage of radioactive wastes. In India, we had the Bhopal gas tragedy. It is associated with which of the following?

1. CO₂
2. Methyl Iso-Cyanate
3. CFC’s
4. Methy Cyanate.

Answer: 2. Methyl Iso-Cyanate

Question 113. Match the items of column A with column B and select the correct option.

1. 1 – B, 2 – C, 3 – A
2. 1 – C, 2 – B, 3 – A
3. 1 – A, 2 – B, 3 – C
4. 1 – C, 2 – A, 3 – B

Answer: 4. 1 – C, 2 – A, 3 – B