Environmental Issues

Biology
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An important product in the ozone depletion by chlorofluorocabons is

A
B
C
D
Hard
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It is said that Taj is getting destroyed due to

A
Flood in Yamuna river
B
Decomposition of marble as a result of high temperature
C
Air pollutant released from oil refinery of Mathura
D
All of the above
Hard
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The common refrigerant chlorofluoro-methane (freon) and NO is a serious pollutant because 

A
It lowers atmospheric temperature.
B
It prevents cloud condensation.
C
It destroys haemoglobin.
D
It disrupts O layer.
Hard
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Fourier predicted the green house effect and it was coined by

A
Fourier
B
Tanseley
C
Arrhenius
D
Odum
Hard
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If forest cover is reduced to half, what is most likely to happen on a long term basis? 

A
Tribals living in these areas will starve to death.
B
Domestic animals in these and joining areas will die due to lack of fodder.
C
Large biomes will become deserts.
D
Crop breeding programes will suffer due to a reduced ability of variety of germplasm.
Hard
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Step taken by the Government of India to control air pollution include :

A
Use of non-polluting Compressed Natural Gas (CNG) only as fuel by all buses and trucks
B
Compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel
C
Compulsory PUC (Pollution Under Control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons
D
Permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles
Hard
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Ozonosphere occurs at height of

A
8-10 km. above poles
B
8-10 km. above equator
C
11-16 km above poles
D
11-16 km above equator
Hard
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One of the most dangerous radioactive pollutant to Homo sapiens is

A
Strontium - 90
B
Phosphorus - 32
C
Sulphur - 35
D
None of the above
Hard
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A lake with an inflow of domestic sewage, rich in organic waste, may result in

A
Drying of the lake very soon due to algal bloom
B
An increased production of fish due to lot of nutrients
C
Death of fish due to lack of oxygen
D
Increased population of aquatic web organisms
Hard
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