NEET PYQs for Environmental Issues with Solutions: Practice NEET Previous Year Questions

Updated 3+ months ago

Environmental Issues is an important topic in the Biology section in NEET exam. Practising this topic will increase your score overall and make your conceptual grip on NEET exam stronger.

This article gives you a full set of NEET PYQs for Environmental Issues with explanations for effective preparation. Practice of NEET Biology PYQs including Environmental Issues questions regularly will improve accuracy, speed, and confidence in the NEET 2026 exam.

NEET PYQs for Environmental Issues with Solutions

1.
The thickness of ozone in a column of air in the atmosphere is measured in terms of:
- Decibels
- Decameter
- Kilobase
- Dobson units
View Solution
2.
Which of the following statements about ozone is correct?
- Tropospheric ozone protects us from UV radiations.
- Stratospheric ozone is 'bad'
- Tropospheric ozone is 'good'
- Stratospheric ozone protects us from UV radiations.
View Solution
3.
Which one of the following statements is NOT correct?
- Algal blooms caused by excess of organic matter in water in water improve water quality and promote fisheries
- Water hyacinth grows abundantly in eutrophic water bodies and leads to an imbalance in the ecosystem dynamics of the water body
- The amount of some toxic substances of industrial waste water increases the organisms at successive trophic levels
- The micro-organisms involved in the biodegradation of organic matter in a sewage polluted water body consume a lot of oxygen causing the death of aquatic organisims
View Solution
4.
The entire fleet of buses in Delhi were converted to CNG from diesel. In reference to this, which one of the following statements is false?
- CNG burns more efficiently than diesel
- The same diesel engine is used in CNG buses making the cost of conversion low
- It is cheaper than diesel
- It cannot be adulterated like diesel
View Solution
5.
In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen ?
- Carbon
- Fe
- Cl
- Oxygen
View Solution
6.
Which of the following pairs of gases is mainly responsible for green house effect ?
- Nitrogen and Sulphur dioxide
- Carbon dioxide and Methane
- Ozone and Ammonia
- Oxygen and Nitrogen
View Solution
7.
Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called
- Bio-infringement
- Biodegradation
- Biopiracy
- Bioexploitation
View Solution
8.
Dobson units are used to measure thickness of
- Troposphere
- CFCs
- Stratosphere
- Ozone
View Solution
9.
Which of the following statements is correct?
- Biomagnification refers to increase in concentration of the toxicant at successive trophic levels.
- Presence of large amount of nutrients in water restricts ‘Algal Bloom’
- Algal Bloom decreases fish mortality
- Eutrophication refers to increase in domestic sewage and waste water in lakes.
View Solution
10.
Montreal protocol was signed in 1987 for control of:
- Transport of Genetically modified organisms from one country to another
- Emission of ozone depleting substances
- Release of Green House gases
- Disposal of e-wastes
View Solution
11.
The device which can remove particulate matter present in the exhaust from a thermal power plant is:
- STP
- Incinerator
- Electrostatic Precipitator
- Catalytic Convertor
View Solution
12.
Which of the following is a secondary pollutant ?
- CO
- SO₂
- CO₂
- O₃
View Solution
13.
Niche is
- all the biological factors in the organism’s environment
- the range of temperature that the organism needs to live
- the physical space where an organism lives
- the functional role played by the organism where it lives
View Solution
14.
Given below are two statements:
Statement I: In a scrubber, exhaust from the thermal plant is passed through the electric wires to charge the dust particles.
Statement II: Particular matter (PM 2.5) can not be removed by scrubber but can be removed by an electrostatic precipitator.
In the light of the above statements, choose the most appropriate answer from the options given below:
- Both statement I and Statement II are correct
- Both statement I and Statement II are incorrect
- Statement I is correct but statement II is incorrect
- Statement I is incorrect but statement II is correct
View Solution
15.
Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?
- Serum and Urine analysis
- Polymerase Chain Reaction (PCR) technique
- Enzyme Linked Immuno-Sorbent Assay (ELISA) technique
- Recombinant DNA Technology
View Solution

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NEET PYQs for Environmental Issues with Solutions

1.The thickness of ozone in a column of air in the atmosphere is measured in terms of:

2.Which of the following statements about ozone is correct?

3.Which one of the following statements is NOT correct?

4.The entire fleet of buses in Delhi were converted to CNG from diesel. In reference to this, which one of the following statements is false?

5.In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen ?

6.Which of the following pairs of gases is mainly responsible for green house effect ?

7.Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called

8.Dobson units are used to measure thickness of

9.Which of the following statements is correct?

10.Montreal protocol was signed in 1987 for control of:

11.The device which can remove particulate matter present in the exhaust from a thermal power plant is:

12.Which of the following is a secondary pollutant ?

13.Niche is

15.Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?

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1.
The thickness of ozone in a column of air in the atmosphere is measured in terms of:

2.
Which of the following statements about ozone is correct?

3.
Which one of the following statements is NOT correct?

4.
The entire fleet of buses in Delhi were converted to CNG from diesel. In reference to this, which one of the following statements is false?

5.
In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen ?

6.
Which of the following pairs of gases is mainly responsible for green house effect ?

7.
Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called

8.
Dobson units are used to measure thickness of

9.
Which of the following statements is correct?

10.
Montreal protocol was signed in 1987 for control of:

11.
The device which can remove particulate matter present in the exhaust from a thermal power plant is:

12.
Which of the following is a secondary pollutant ?

13.
Niche is

15.
Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?