Dobson units are used to measure thickness of:
1. Ozone
2. Troposphere
3. CFCs
4. Stratosphere

Subtopic:  Ozone Layer Depletion |
 90%
From NCERT
NEET - 2021
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Air (Prevention and Control of Pollution) Act was amended in 1987 to include among pollutants:

1. Vehicular exhaust

2. Allergy causing pollen

3. Noise

4. Particulates of size 2.5 micrometer or below

Subtopic:  Air Pollution |
 74%
From NCERT
NEET - 2020
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A species that was introduced for ornamentation but has become a troublesome weed in India:

1. Parthenium hysterophorus

2. Eichhornia crassipes

3. Prosopis juliflora

4. Trapa Spinosa

Subtopic:  Water Pollution |
 82%
From NCERT
NEET - 2020
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Algal blooms:
I. are the result of a nutrient, like nitrogen or phosphorus from various sources entering the aquatic system and causing excessive growth of algae.
II. lead to increased dissolved oxygen in water body as algae are photosynthetic
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
 
Subtopic:  Water Pollution |
 71%
From NCERT
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India has promised to become carbon neutral and achieve net zero emissions by
1. 2030
2. 2050
3. 2060
4. 2070
 
Subtopic:  Air Pollution |
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Identify the correct statements:
 
I: Chipko movement aimed at protecting trees and forests.
II: Joint Forest Management originated in West Bengal in 1980's in India.
III: The Amrita Devi Bishnoi Wildlife Protection Award is a national award instituted by the government of India for wildlife conservation.
 
1. Only I and II
2. Only I and III
3.  Only II and III
4. I, II and III
Subtopic:  Resource Utilisation & Maintenance |
 61%
From NCERT
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Montreal protocol:
 
1. is an international treaty designed to protect the ozone layer signed in 1987, and entered into force in 1989.
2. is an international treaty designed to control global warming signed in 1991, and entered into force in 1993.
3.  is an international treaty designed to protect the ecological hotspots of biodiversity signed in 1987, and entered into force in 1989.
4.  is an international treaty designed to protect wetlands signed in 1985, and entered into force in 1987.
Subtopic:  Ozone Layer Depletion |
 83%
From NCERT
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El Nino:
1.    is a climate pattern that describes the unusual warming of surface waters in the eastern Pacific Ocean.
2.    is a climate pattern that describes the unusual cooling of surface waters in the eastern Pacific Ocean.
3.    is a climate pattern that describes the unusual heavy monsoon rains in the Indian subcontinent in winters.
4.    is a climate pattern that describes the unusual warming of the Arctic causing large scale meltdown of ice.
 
Subtopic:  Green House Effect & Global Warming |
 53%
From NCERT
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Amongst the following which gas is the least contributor to total global warming?
1.    Methane
2.    Carbon dioxide
3.    Chlorofluorocarbons
4.    Nitrous oxide
Subtopic:  Green House Effect & Global Warming |
 79%
From NCERT
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Three Mile Island and Chernobyl are located respectively in:
1.    USA and Russia
2.    Russia and Canada
3.    USA and Ukraine
4.    England and Uzbekistan
 
Subtopic:  Agrochemical & Radioactive Waste |
 64%
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