81.
Beside CH4 and CO2 other green house gas from agriculture area
A
SO2
B
NH3
C
NO2
D
CFC
Answer :
NO2
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82.
Effect of pollution is first marked on
A
Micro - organisms
B
Green vegetation of an area
C
Food crop
D
None of the above
Answer :
Green vegetation of an area
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83.
Which of these following methods is the most suitable for disposal of nuclear waste?
A
Shoot the waste into space
B
Bury the waste under Antarctic ice-cover
C
Dump the waste within rocks under deep ocean
D
Bury the waste within rocks deep below the Earth's surface
Answer :
Bury the waste within rocks deep below the Earth's surface
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84.
Thermal pollution is caused by
A
Power plants
B
Industries
C
Automobiles
D
All of the above
Answer :
All of the above
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85.
A biosphere is composed of
A
Living organisms
B
Living organisms + Lithosphere
C
Living organism + lithosphere + Atmosphere
D
Living organisms + lithosphere + atmosphere + hydrosphere atmosphere + hydrosphere
Answer :
Living organisms + lithosphere + atmosphere + hydrosphere atmosphere + hydrosphere
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86.
Which of the following is a renewable source of energy
A
Petroleum
B
Coal
C
Nuclear fuel
D
Trees
Answer :
Trees
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87.
The two vegetations of ecosystem are separated by
A
Ecotone
B
Ecoline
C
Ecosystem
D
Ecesis
Answer :
Ecotone
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88.
The organisms inhabiting a common environment belongs to the same
A
Species
B
Genus
C
Population
D
Community
Answer :
Population
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89.
In a forest ecosystem green plants are
A
Primary producers
B
Consumers
C
Primary consumers
D
Decomposers
Answer :
Primary producers
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90.
In almost all Indian metropolitan cities like Delhi, the major atmospheric pollutant(s) is/are
A
Suspended particulate matter (SPM)
B
Oxide of sulphur
C
Carbon dioxide and carbon monoxide
D
Oxides of nitrogen
Answer :
Suspended particulate matter (SPM)
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