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MEDIUM
ENGLISH
Agriculture
Which one of the following techniques is used for assessing available P in soil and does not include growing plants:
A
E-Value
Option A
B
L-Value
Option B
C
a-Value
Option C
D
A-Value
Option D
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MEDIUM
ENGLISH
Agriculture
Most abundant organic compound in nature?
A
Cellulose
Option A
B
Hemicellulose
Option B
C
Lignin
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
The term rhizosphere was coined by:___________?
A
Liebig
Option A
B
Baussingault
Option B
C
Hiltner
Option C
D
Winogrdsky
Option D
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MEDIUM
ENGLISH
Agriculture
The nutrient element silicon (Si) is:_________?
A
Beneficial
Option A
B
Harmful
Option B
C
Both a and b
Option C
D
None of the above
Option D
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MEDIUM
ENGLISH
Agriculture
Availability of Zn is higher to crops in:_________?
A
Acid soils
Option A
B
Sodic soils
Option B
C
Saline-sodic soils
Option C
D
Saline soils
Option D
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MEDIUM
ENGLISH
Agriculture
Which of the following fertilizers show maximum residual acidity with the continuous soil application:
A
Urea
Option A
B
Ammonium nitrate
Option B
C
Ammonium sulphate
Option C
D
Calcium ammonium nitrate
Option D
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MEDIUM
ENGLISH
Agriculture
Roots usually occupy :__________?
A
1% or less of soil volume
Option A
B
10% or less of soil volume
Option B
C
20% or less of soil volume
Option C
D
30% or less of soil volume
Option D
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MEDIUM
ENGLISH
Agriculture
What is the concentration of pure water?
A
55.5 mol/L
Option A
B
45.5 mol/L
Option B
C
Both a and b
Option C
D
none of these
Option D
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MEDIUM
ENGLISH
Agriculture
Biological Weathering involves:
A
Man and Animals
Option A
B
Higher Plants and Roots
Option B
C
Micro- organisms
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
The process of transformation of raw organic matter into humus:
A
Calcification
Option A
B
Horizonation
Option B
C
Illuviation
Option C
D
Humification
Option D
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MEDIUM
ENGLISH
Agriculture
The process of deposition of soil materials in the lower layer is termed as:_________?
A
Illuviation
Option A
B
Eluviation
Option B
C
Podzolization
Option C
D
Laterization
Option D
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MEDIUM
ENGLISH
Agriculture
The resistance of a soil at various moisture contents to mechanical stresses or manipulations:
A
Soil crusting
Option A
B
Soil consistence
Option B
C
Bulk Density
Option C
D
Both a & c
Option D
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MEDIUM
ENGLISH
Agriculture
Water occupied the larger soil pores and moves down readily under the force of gravity. Water in excess of the field capacity is termed:
A
Capillary water
Option A
B
Hygroscopic water
Option B
C
Gravitational water
Option C
D
None of the above
Option D
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MEDIUM
ENGLISH
Agriculture
If the chlorophyll content in plant increases, the solar radiation transmitted:
A
Increases
Option A
B
Decreases
Option B
C
Constant
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Agriculture
Fe is trivalent in which of the chemical compound:
A
Fe (NO3)3
Option A
B
Fe2 (NO3)3
Option B
C
Fe3 (NO2)
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Agriculture
The virus infecting bacteria is called:_________?
A
Bacteroid
Option A
B
Bacteriophage
Option B
C
Bacterin
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
Which of the following crop takes N in ammonical form:
A
Wheat
Option A
B
Cotton
Option B
C
Rice
Option C
D
Mustard
Option D
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MEDIUM
ENGLISH
Agriculture
What are diatoms?
A
Soil Fungi
Option A
B
Soil Algae
Option B
C
Soil Bacteria
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Agriculture
What is the pH of calcareous soils?
A
8.0-8.5
Option A
B
7.0-7.5
Option B
C
8.5-9.0
Option C
D
6.5-7.5
Option D
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MEDIUM
ENGLISH
Agriculture
Potassium (K) fixation capacity is maximum in:____________?
A
Vermiculite
Option A
B
Illite
Option B
C
Montmorillonitic
Option C
D
Amorphous clay
Option D
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