Indicator of water pollution:
1.  E. Coli
2.  Chlorella
3.  Beggiatoa
4.  Ulothrix

Subtopic:  Water Pollution |
 59%
AIPMT - 1998
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If CO2 is absent in the atmosphere of the earth, then:
1.  Temperature will decrease
2.  Temperature will increase
3.  Plants will flourish well
4.  No effect

Subtopic:  Green House Effect & Global Warming |
 81%
From NCERT
AIPMT - 1998
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Besides CHand CO2, another green house gas is:
1.   SO2
2.   NH3
3.   N2O
4.   CFC 

Subtopic:  Green House Effect & Global Warming |
From NCERT
AIPMT - 1998
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Temperature variation in Pacific ocean in present time is called:
1.  Cyclone effect
2.  El Nino effect
3.  Greenhouse effect
4.  Gaudikov's effect

Subtopic:  Green House Effect & Global Warming |
 86%
From NCERT
AIPMT - 1998
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Sewage purification is performed by:
1.  Microbes
2.  Fertilisers
3.  Antibiotics
4.  Antiseptics

Subtopic:  Water Pollution |
 93%
From NCERT
AIPMT - 1998
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Most stable pesticides:
1.  Organophosphates
2.  Organochlorines
3.  Bordeaux mixture
4.  Azaderectnin

Subtopic:  Agrochemical & Radioactive Waste |
AIPMT - 1999
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Best economic method to harvest solar energy:
1.  Solar cell
2.  Energy plantation
3.  Cultivation of sugar cane then energy obtain by burning it
4.  Solar cooker

Subtopic:  Green House Effect & Global Warming |
AIPMT - 1999
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Bhopal gas tragedy is related to:
1.  Methane
2.  Carbon monoxide
3.  Methyl Isocyanate (MIC)
4.  SO2

Subtopic:  Air Pollution |
 85%
AIPMT - 1999
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Concentration of DDT is highest in:
1.  Primary consumer
2.  Producers
3.  Top consumer
4.  Decomposers

Subtopic:  Water Pollution |
 87%
From NCERT
AIPMT - 1999
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Which of the following is a secondary pollutant:
1. PAN
2. CO
3. NO2
4. SO2

Subtopic:  Air Pollution |
 75%
AIPMT - 1999
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