Multiple Choice Questions (MCQs) for NEET Biology: Environmental Issues
Explore reliable objective questions for Environmental Issues tailored for NEET learners. Utilizing these Biology multiple-choice formats ensures thorough preparation and strengthens problem-solving speed for upcoming school assessments.
Practice Environmental Issues MCQs for NEET Biology
Access the complete set of multiple-choice questions for Environmental Issues below. This focused format allows students to isolate specific topics for thorough review and uninterrupted practice alongside official NEET textbooks.
Multiple Choice Questions
(a) Butane
(b) Ethane
(c) Methane
(d) Propane
Show Answer & Explanation
Answer: (c) Methane
Explanation:
1. The correct option is (3) Methane.
2. CNG is methane.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Methane.
(a) 99%
(b) 100%
(c) 89%
(d) 45%
Show Answer & Explanation
Answer: (a) 99%
Explanation:
1. The correct option is (1) 99%.
2. The electrostatic precipitator can remove over 99% particulate matter.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: 99%.
(a) Platinum-palladium and rhodium as catalysts
(b) Lead in petrol activates the catalysts
(c) Reduced the emission of poisonous gases
(d) CO and NOx changed to CO2 and N2 gas
Show Answer & Explanation
Answer: (b) Lead in petrol activates the catalysts
Explanation:
1. The correct option is (2) Lead in petrol activates the catalysts.
2. Lead present in petrol inactivate the catalysts.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Lead in petrol activates the catalysts.
(a) First
(b) Fourth
(c) Second
(d) Third
Show Answer & Explanation
Answer: (b) Fourth
Explanation:
1. The correct option is (2) Fourth.
2. Among 41 most polluted cities, Delhi ranked 4th city of the world.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Fourth.
(a) Phasing out of old vehicles
(b) Uses of unleaded petrol
(c) Buses were converted to run on CNG
(d) Use of catalytic converters
Show Answer & Explanation
Answer: (c) Buses were converted to run on CNG
Explanation:
1. The correct option is (3) Buses were converted to run on CNG.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Buses were converted to run on CNG.
(a) O3 and CO
(b) NO2 and N2O
(c) Sulphur and aromatic hydrocarbons
(d) CO2 and particulate matter
Show Answer & Explanation
Answer: (c) Sulphur and aromatic hydrocarbons
Explanation:
1. The correct option is (3) Sulphur and aromatic hydrocarbons.
2. Euro-II is emission norms for reducing sulphur and aromatic hydrocarbons.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Sulphur and aromatic hydrocarbons.
(a) Mercury
(b) Copper
(c) Arsenic
(d) Lead
Show Answer & Explanation
Answer: (d) Lead
Explanation:
1. The correct option is (4) Lead.
2. Lead because it interferes with haem synthesis, oxygen and glucose metabolism and causes anaemia, vomiting, convulsions, madness etc.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Lead.
(a) Transport system
(b) Oil refineries and thermal power plants
(c) Sugar, textile and paper industries
(d) Office equipment
Show Answer & Explanation
Answer: (a) Transport system
Explanation:
1. The correct option is (1) Transport system.
2. The major source of noise pollution, worldwide due to transport system e.g. 150 dB or more sound generated by take off of a jet plane.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Transport system.
(a) Particulate matter
(b) Unburnt hydrocarbon
(c) SO2
(d) Sewage
Show Answer & Explanation
Answer: (c) SO2
Explanation:
1. The correct option is (3) SO2.
2. Pollutant which can be removed by a scrubber is SO2.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: SO2.
(a) Methane
(b) Carbon dioxide and methane
(c) Carbon monoxide
(d) Carbon dioxide and water
Show Answer & Explanation
Answer: (d) Carbon dioxide and water
Explanation:
1. The correct option is (4) Carbon dioxide and water.
2. In automobiles catalytic convertes change unburns hydrocarbons into CO2 and H2O. (Water Pollution and its control).
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Carbon dioxide and water.
(a) Trapa
(b) Azolla
(c) Wolffia
(d) Eichhornia
Show Answer & Explanation
Answer: (d) Eichhornia
Explanation:
1. The correct option is (4) Eichhornia.
2. Eichhornia because their offsets grow very rapidly and creates havoc, so very difficult to get rid off.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Eichhornia.
(a) a(v), b(ii), c(iv), d(i), e(iii)
(b) a(v), b(iii), c(iv), d(ii), e(i)
(c) a(i), b(iii), c(iv), d(v), e(ii)
(d) a(i), b(ii), c(iv), d(v), e(iii)
Show Answer & Explanation
Answer: (b) a(v), b(iii), c(iv), d(ii), e(i)
Explanation:
1. The correct option is (2) a(v), b(iii), c(iv), d(ii), e(i).
2. Environment (Protection) Act – 1986 Air (Prevention and Control of Pollution) Act – 1981 Water (Prevention and Control of Pollution) Act – 1974 Montreal Protocol – 1987 National Forest Policy – 1988.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. Check every option separately before choosing a combined answer.
(a) Bee-keeping
(b) Dairy management
(c) Water harvesting
(d) All of these
Show Answer & Explanation
Answer: (d) All of these
Explanation:
1. The correct option is (4) All of these.
2. Ramesh Chandra Dagar includes dairy management, Bee-keeping and water harvesting for organic farming.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. Check every option separately before choosing a combined answer.
(a) Has a high BOD as it contains both aerobic and anaerobic bacteria
(b) Is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs)
(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
Show Answer & Explanation
Answer: (b) Is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs)
Explanation:
1. The correct option is (2) Is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs).
2. The domestic sewage in large cities is treated by aerobic and then anaerobic bacteria (Anaerobic sludge digestor) in secondary treatment of sewage.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs).
(a) Fecal matter and paper fibres
(b) Sand and clay
(c) Phosphates and nitrates
(d) Nitrates and sulphates
Show Answer & Explanation
Answer: (c) Phosphates and nitrates
Explanation:
1. The correct option is (3) Phosphates and nitrates.
2. Nutrient enrichment of water body by phosphate and nitrates leads to eutrophication.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Phosphates and nitrates.
(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
Show Answer & Explanation
Answer: (a) Sustainable system for handling human excreta
Explanation:
1. The correct option is (1) Sustainable system for handling human excreta.
2. Ecosanitation is sustainable system for handling human excreta.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Sustainable system for handling human excreta.
(a) Large fish
(b) Phytoplanktons
(c) Fish eating birds
(d) Small fish
Show Answer & Explanation
Answer: (c) Fish eating birds
Explanation:
1. The correct option is (3) Fish eating birds.
2. Fish eating birds with 25 ppm DDT Small fish – 0.5 ppm Large fish – 2 ppm Phytoplanktons – 0.04 ppm.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Fish eating birds.
(a) Increases CO2 level
(b) Leads to oxygen depletion
(c) Kills fishes
(d) All of these
Show Answer & Explanation
Answer: (d) All of these
Explanation:
1. The correct option is (4) All of these.
2. Kills fishes by oxygen depletion.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. Check every option separately before choosing a combined answer.
(a) Hot water springs
(b) Coal based power plants
(c) Temperate zones
(d) Tropical zones
Show Answer & Explanation
Answer: (b) Coal based power plants
Explanation:
1. The correct option is (2) Coal based power plants.
2. Thermal pollution is more near coal based power plants.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Coal based power plants.
(a) BOD and DO are high
(b) BOD is high and DO is low
(c) Both are low
(d) BOD is low and DO is high
Show Answer & Explanation
Answer: (b) BOD is high and DO is low
Explanation:
1. The correct option is (2) BOD is high and DO is low.
2. In a polluted lake BOD is high and DO is low. (Solid Wastes).
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: BOD is high and DO is low.
(a) Hazardous and disposed by incinerator
(b) Non-hazardous and disposed by incinerator
(c) Hazardous and disposed into water
(d) Non-hazardous and disposed into water
Show Answer & Explanation
Answer: (a) Hazardous and disposed by incinerator
Explanation:
1. The correct option is (1) Hazardous and disposed by incinerator.
2. Hospital wastes are hazardous therefore disposed by incinerator.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Hazardous and disposed by incinerator.
(a) Bitumen
(b) Plastic film waste
(c) Recycled plastic
(d) Any biodegradable waste
Show Answer & Explanation
Answer: (b) Plastic film waste
Explanation:
1. The correct option is (2) Plastic film waste.
2. The raw material for making polyblend is plastic wastes. (Agro-chemical and their Effects).
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Plastic film waste.
(a) Ramesh Chandra Dagar
(b) Ahmed Khan
(c) Panduranga Hegde
(d) Amrita Devi
Show Answer & Explanation
Answer: (a) Ramesh Chandra Dagar
Explanation:
1. The correct option is (1) Ramesh Chandra Dagar.
2. Ramesh Chandra Dagar – Organic farming Ahmed Khan – Plastic waste Panduranga Hegde – Conservation of forest Amrita Devi – (Radioactive Wastes).
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: Ramesh Chandra Dagar.
(a) 15°C
(b) 33°C
(c) 0.6°C
(d) 1.6°C
Show Answer & Explanation
Answer: (c) 0.6°C
Explanation:
1. The correct option is (3) 0.6°C.
2. During the past century, the temperature of earth has increased by 0.6°C.
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: 0.6°C.
(a) 33%
(b) 67%
(c) 19.4%
(d) 23%
Show Answer & Explanation
Answer: (b) 67%
Explanation:
1. The correct option is (2) 67%.
2. National Forest Policy 1988 of India for hills, forest percent recommended is 67% and 33% for plains areas. (Greenhouse Effect and Global Warming).
Teacher's Note:
1. Link this question to the matching NCERT topic and revise it.
2. The point to remember: 67%.
Practice MCQs for NEET Biology Environmental Issues
Chapter MCQs with Answers for NEET Biology
Explore reliable practice questions for Environmental Issues tailored for NEET Biology learners. Use these multiple-choice formats to evaluate preparedness and strengthen problem-solving skills.
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FAQs
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Yes, Biology MCQs for NEET have answer key and brief explanations to help students understand logic behind the correct option as its important for 2026 competency-focused NEET exams.
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