Environmental Issues Practice Questions
NEET · Biology · 1005 free MCQs with instant results and detailed explanations.
1005
Total
201
Easy
444
Medium
360
Hard
Start Practicing Environmental Issues
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Topics in Environmental Issues
Air and Water Pollution
165
Deforestation
169
Greenhouse Effect
171
Radioactive Waste
171
Ozone Depletion
155
Solid Waste
174
Sample Questions from Environmental Issues
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What is the primary source of air pollution in urban areas?
A.
Vehicle emissions
B.
Dust storms
C.
Industrial waste
D.
Deforestation
Show Answer & Explanation
Correct Answer: A
Vehicle emissions are the leading contributors to air pollution in urban environments due to high traffic density and the use of fossil fuels.
Q2
Easy
Which of the following is a major consequence of water pollution?
A.
Increase in biodiversity
B.
Eutrophication
C.
Enhanced fish populations
D.
Decreased soil erosion
Show Answer & Explanation
Correct Answer: B
Eutrophication is a significant consequence of water pollution, leading to excessive nutrient enrichment and harmful algal blooms.
Q3
Easy
What is a common method used to treat drinking water?
A.
Sedimentation
B.
Burning
C.
Recycling
D.
Combustion
Show Answer & Explanation
Correct Answer: A
Sedimentation is a common water treatment method where particles settle at the bottom, clarifying the water for safe drinking.
Q4
Medium
Which of the following is a primary air pollutant directly emitted from sources like vehicles and industries?
A.
Carbon monoxide
B.
Ozone
C.
Sulfuric acid
D.
Photochemical oxidants
Show Answer & Explanation
Correct Answer: A
Carbon monoxide is a primary air pollutant because it is directly emitted from sources such as vehicles and industrial processes, while ozone and photochemical oxidants are secondary pollutants formed in the atmosphere.
Q5
Medium
What is the main cause of the greenhouse effect that leads to global warming?
A.
Nitrogen gas increase
B.
Carbon dioxide accumulation
C.
Ozone depletion
D.
Increase in methane concentration
Show Answer & Explanation
Correct Answer: B
The main cause of the greenhouse effect is the accumulation of carbon dioxide in the atmosphere, which traps heat and raises the Earth's temperature.
Q6
Medium
Which of the following is NOT a consequence of water pollution?
A.
Eutrophication
B.
Acid rain
C.
Biomagnification
D.
Thermal stratification
Show Answer & Explanation
Correct Answer: D
Thermal stratification is a natural phenomenon caused by temperature differences in water bodies, not a direct consequence of water pollution, unlike eutrophication, acid rain, and biomagnification.
Q7
Medium
Which pollutant is primarily responsible for the formation of acid rain?
A.
Nitric oxide
B.
Sulfur dioxide
C.
Carbon monoxide
D.
Methane
Show Answer & Explanation
Correct Answer: B
Sulfur dioxide is primarily responsible for acid rain as it reacts with water vapor in the atmosphere to form sulfuric acid, significantly lowering the pH of rainwater.
Q8
Hard
Which of the following pollutants is most commonly associated with the formation of acid rain?
A.
Sulfur dioxide
B.
Carbon monoxide
C.
Methane
D.
Nitrogen oxides
Show Answer & Explanation
Correct Answer: A
Sulfur dioxide reacts with water vapor in the atmosphere to form sulfuric acid, leading to acid rain.
Q9
Hard
What is the primary source of heavy metal contamination in water bodies?
A.
Agricultural runoff
B.
Industrial discharge
C.
Domestic sewage
D.
Atmospheric deposition
Show Answer & Explanation
Correct Answer: B
Industrial discharge is the main contributor to heavy metals in water due to improper waste disposal practices.
Q10
Hard
Which of the following is NOT a consequence of air pollution?
A.
Respiratory diseases
B.
Global warming
C.
Ozone layer depletion
D.
Increased soil fertility
Show Answer & Explanation
Correct Answer: D
Increased soil fertility is generally not affected by air pollution, while the other options are direct consequences.
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Environmental Issues — NEET Biology Practice Questions Online
This page contains 1005 practice MCQs for the chapter Environmental Issues in NEET Biology. The questions are organized by difficulty — 201 easy, 444 medium, 360 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 6 topics, giving you comprehensive coverage of the entire chapter.