Biochemical Oxygen Demand (BOD) may not be a good index for pollution in water bodies receiving effluents from

(1) domestic service

(2) dairy industry

(3) petroleum industry

(4) sugar industry

Subtopic:  Water Pollution: I | Water Pollution |
 57%
NEET - 2016
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A lake which is rich in organic waste may result in
(1) increased population of aquatic organisms due to minerals

(2) drying of the lake due to algal bloom

(3) increased population of fish due to lots of nutrients

(4) mortality of fish due to lack of oxygen

Subtopic:  Water Pollution: I | Water Pollution |
 73%
From NCERT
NEET - 2016
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The highest DDT concentration in aquatic food chain shall occur in 
(1) phytoplankton

(2) seagull

(3) crab

(4) eel

Subtopic:  Water Pollution: I | Water Pollution |
 62%
NEET - 2016
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Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers
(1) ozone

(2) ammonia 

(3) methane

(4) nitrous oxide

Subtopic:  Ozone Layer Depletion |
 94%
From NCERT
NEET - 2016
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Joint Forest Management Concept was introduced in India during
(1) 1970s

(2) 1980s

(3) 1990s

(4) 1960s

Subtopic:  Resource Utilisation & Maintenance |
 76%
From NCERT
NEET - 2016
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A river with an inflow of domestic sewage rich in organic waste may result in

1. increased population of aquatic food web organisms

2. an increased production of fish due to biodegradable nutrients

3. death of fish due to lack of oxygen

4. drying of the river very soon due to algal bloom

Subtopic:  Water Pollution: I |
 88%
From NCERT
NEET - 2016
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The UN conference of Parties on climate change in the year 2012 was held at

1. Durban             

2. Doha

3. Lima                 

4. Warsaw

Subtopic:  Resource Utilisation & Maintenance |
 65%
NEET - 2015
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Increase in concentration of the toxicant at successive tropic levels is known as

1. biomagnification

2. biodeterioration

3. biotransformation

4. biogeochemical cycling

Subtopic:  Water Pollution: I | Water Pollution |
 95%
From NCERT
NEET - 2015
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Acid rain is caused by increase in the atmospheric concentration of

1. SO2 and NO2

2. SO3 and CO

3. CO2 and CO

4. O3 and dust

Subtopic:  Air Pollution |
 90%
NEET - 2015
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Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of

1. food

2. light

3. essential minerals

4. Oxygen

Subtopic:  Water Pollution: I | Water Pollution |
 65%
From NCERT
NEET - 2015
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