Which one of the following is a wrong statement?

1. Most of the forests have been lost in tropical areas

2. Ozone in upper part of atmosphere is harmful to animals

3. Greenhouse effect is a natural phenomenon

4. Eutrophication is a natural phenomenon in freshwater bodies

Subtopic:  Ozone Layer Depletion |
 77%
From NCERT
NEET - 2012
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Measuring Biochemical Oxygen Demand (BOD) is a method used for

1. estimating the amount of organic matter in sewage water

2. working out the efficiency of oil driven automobile engines

3. measuring the activity of Saccharomyces cerevisae in producing curd on a commercial

scale

4. working out the efficiency of RBCs about their capacity to carry oxygen

 

Subtopic:  Water Pollution: I | Water Pollution |
 94%
From NCERT
NEET - 2012
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Which one of the following pairs of gases are the major cause of Green house effect?

1. CO2 and CO

2. CFCs and SO2

3. CO2 and N20

4. CO2 and O3

Subtopic:  Green House Effect & Global Warming |
 69%
From NCERT
NEET - 2011
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Which one of the following statements is wrong in case Bhopal gas tragedy?

1. Thousands of human beings died

2. Radioactive fall out engulfed Bhopal

3. It took place in the night of December 2/3, 1984

4. Methyl isocynate gas leakage took place

Subtopic:  Agrochemical & Radioactive Waste |
 64%
NEET - 2011
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Eutrophication is often seen in

1. fresh water lakes

2. ocean

3. mountains

4. deserts

Subtopic:  Water Pollution: I | Water Pollution |
 94%
From NCERT
NEET - 2011
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A renewable exhaustible natural resource is 

1. coal

2. petroleum

3. minerals

4. forest

Subtopic:  Resource Utilisation & Maintenance |
 64%
NEET - 2010
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dB is a standard abbreviation used for the quantitative expression of

1. the density of bacteria in a medium

2. a particular pollutant

3. the dominant Bacillus in a culture

4. a certain pesticide

Subtopic:  Air Pollution |
 85%
From NCERT
NEET - 2010
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The two gases making highest relative contribution to the greenhouse gases are

1. CO2 and CH4

2. CH4 and NO2

3. CFCs and N20

4. CO2 and N20

 

Subtopic:  Green House Effect & Global Warming |
 75%
From NCERT
NEET - 2010
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Chipko movement was launched for the protection of

1. grasslands

2. forests

3. liverstock

4. wet lands

Subtopic:  Resource Utilisation & Maintenance |
 97%
From NCERT
NEET - 2009
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DDT residues are rapidly passed through food chain causing biomagnification because

DDT is :-

1. lipid soluble

2. moderately toxic

3. non-toxic to aquatic animals

4. water soluble

Subtopic:  Water Pollution: I | Water Pollution |
 52%
NEET - 2009
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