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MEDIUM
ENGLISH
Agriculture
The classical smog mainly contains:
A
Hydrocarbons only
Option A
B
Hydrocarbons and SO2
Option B
C
Hydrocarbons and N2O
Option C
D
Particulate matter and SO2
Option D
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MEDIUM
ENGLISH
Agriculture
What immediate hazard is likely to occur if the temperature of the earth rises by 5?C?
A
Melting of polar ice
Option A
B
Destruction of phytoplanktons
Option B
C
Inundation of coastal towns
Option C
D
Increase in productivity
Option D
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MEDIUM
ENGLISH
Agriculture
The photochemical smog is also called:
A
Los Angeles type smog
Option A
B
New York type smog
Option B
C
Tokyo type smog
Option C
D
California type smog
Option D
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MEDIUM
ENGLISH
Agriculture
Atmospheric pollution is also caused by the gas:
A
Phosphene
Option A
B
Nitrogen
Option B
C
Hydrogen
Option C
D
Nerve gas VX
Option D
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MEDIUM
ENGLISH
Agriculture
The lowest temperature in the atmosphere is recorded at:
A
Mesopause
Option A
B
Tropopause
Option B
C
Stratopause
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
The CFC pollution sources include:
A
Jet air crafts only
Option A
B
Fire extinguishers and jet air crafts
Option B
C
Refrigerators and jet air crafts
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
The pollutants like phenol, Na and Hg can be removed from water by technique/s such as:
A
Reverse osmosis
Option A
B
Electrodialysis
Option B
C
Both (a) & (b)
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Agriculture
Which of the following air pollutant is carcinogenic?
A
Ethylene
Option A
B
3.4 Benzpyrene
Option B
C
N2O
Option C
D
PAN
Option D
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MEDIUM
ENGLISH
Agriculture
The sea water gets pollution mainly due to:
A
Industrial waste
Option A
B
Oil spills
Option B
C
Death of marine fauna
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Agriculture
PAN stands for:
A
Peroxy acetyl nitrate
Option A
B
Peroxy acyl nitrite
Option B
C
Pyridine aceto-nitrite
Option C
D
Peroxy aceto-nitrile
Option D
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MEDIUM
ENGLISH
Agriculture
Greenhouse effect refers to:
A
Production of cereals
Option A
B
Trapping of UV rays
Option B
C
Cooling of earth
Option C
D
Warming of earth
Option D
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MEDIUM
ENGLISH
Agriculture
The percentage of water found in oceans is:
A
89%
Option A
B
93%
Option B
C
97%
Option C
D
86%
Option D
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MEDIUM
ENGLISH
Agriculture
Which of the following is generally used for induced mutagenesis in crop plants?
A
Gamma rays (from cobalt 60)
Option A
B
X-rays
Option B
C
UV (260 nm)
Option C
D
Alpha particles
Option D
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MEDIUM
ENGLISH
Agriculture
Pollution is:
A
Always an unfavourble alteration
Option A
B
Always a favourable change
Option B
C
Rarely a favoruable alteration
Option C
D
Usually an unfavourable change
Option D
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MEDIUM
ENGLISH
Agriculture
Prolonged liberal irrigation of agricultural fields is likely to create the problem of:
A
Acidity
Option A
B
Metal toxicity
Option B
C
Aridity
Option C
D
Salinity
Option D
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MEDIUM
ENGLISH
Agriculture
The Escherichia cells in a human excreta number in:
A
Thousands
Option A
B
Hundreds
Option B
C
Billion
Option C
D
Millions
Option D
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MEDIUM
ENGLISH
Agriculture
COD stands for:
A
Caesium oxide deposition
Option A
B
Control of diesel
Option B
C
Chemistry of depositions
Option C
D
Chemical oxygen demand
Option D
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MEDIUM
ENGLISH
Agriculture
In the polluted water, the values of:
A
BOD much higher than COD
Option A
B
BOD slightly higher than COD
Option B
C
COD slightly higher than BOD
Option C
D
COD much higher than BOD
Option D
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MEDIUM
ENGLISH
Agriculture
The most harmful pesticide is:
A
PAN
Option A
B
2,4,5-T
Option B
C
2,4-D
Option C
D
DDT
Option D
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MEDIUM
ENGLISH
Agriculture
Which of the following is not a commonly used pesticide?
A
Aldrin
Option A
B
Lindane
Option B
C
Chlordane
Option C
D
Chloremphenicol
Option D
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