Human being can hear range of sound frequency between;
20-20,000 Hertz
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10-1,000 Hertz
1-100 Hertz
None of the Option is Correct
Category: Environmental Sciences MCQs
First International Conference on environment held on;
First International Conference on environment held on;
June, 1972.
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June, 1970.
March, 1970.
March, 1968.
With respect to environment science, full form of SPM is;
With respect to environment science, full form of SPM is;
Suspended Particulate Matter
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Suspended Partial Matter
Suspended Pollutant Matter
None of the Option is Correct
Deforestation generally decreases;
Deforestation generally decreases;
Rainfall
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Global warming
Soil erosion
Drought
In an ecosystem, bacteria are the
In an ecosystem, bacteria are the
Decomposers
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Secondary consumers.
Primary consumers.
Producers
Which one of the following are non-renewable resources?
Which one of the following are non-renewable resources?
Fossil fuels.
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Forests
Animals
All Options are Correct
Biosphere reserve project was initiated in India during;
Biosphere reserve project was initiated in India during;
1986
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1985
1984
1983
Sound becomes hazardous noise pollution at decibels-
Sound becomes hazardous noise pollution at decibels-
Above 80.
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Above 50.
Above 100.
Above 130.
Phytoplankton are the members of;
Phytoplankton are the members of;
Aquatic ecosystem.
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Forest ecosystem.
Desert ecosystem.
Grassland ecosystem.
Syringes are examples of
Syringes are examples of
Biomedical wastes.
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Industrial wastes.
Domestic wastes.
Radioactive wastes.