Soil Science JRF, SRF, NET, & ARS – Telegram
Soil Science JRF, SRF, NET, & ARS
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Base saturation in lateritic soil
Anonymous Quiz
32%
< 40 %
38%
> 40%
24%
< 20%
6%
> 20%
Immobilization of sulphur occur in soil when C:S ratio is
Anonymous Quiz
35%
> 300:1
41%
> 400:1
10%
< 300:1
15%
> 200:1
Denitrification is a process of
Anonymous Quiz
14%
Oxidation
5%
Hydration
2%
Carbonation
78%
Reduction
👍2
Actinomycetes prefer which condition for their growth
Anonymous Quiz
53%
Slightly alkaline
29%
Alkaline
11%
Acidic
7%
Neutral
Nitrification process ceases at pH
Anonymous Quiz
54%
< 5
17%
< 6
11%
< 7
17%
< 8
Nitrification rapid in ---- season
Anonymous Quiz
17%
Winter
18%
Rainy
61%
Summer
4%
All of the above
👍1
The peak microbial population was observed in soil generally after addition of residue
Anonymous Quiz
32%
3-4 week
42%
2-3 week
10%
3-4 days
17%
1-2 week
Ammonia volatilization is purely process of
Anonymous Quiz
12%
Physical
67%
Chemical
18%
Biological
3%
Mechanical
Which element suppressed Downy mildew of pear millets?
Anonymous Quiz
65%
Chloride
20%
Fluoride
13%
Bromide
3%
Lithium
Improper development of wheat inflorescence is due to deficiency of
Anonymous Quiz
11%
Magnesium
14%
Molybdenum
13%
Calcium
63%
Boron
Organic matter obtained
Anonymous Quiz
83%
OC x 1.724
10%
OC x 2.24
4%
OC x 1.55
3%
OC x 1.64
Saturated hydraulic conductivity is measured by
Anonymous Quiz
26%
Pycnometer
23%
Tensiometer
21%
Amoozemeter
29%
Hydrometer
Which chemical compound is used for improve soil aeration, infiltration and water holding capacity of soil
Anonymous Quiz
49%
Jalshakti
20%
Fentachlore
25%
Hydrotech
7%
None of the above
Reddish colour in muriate of potash is due to
Anonymous Quiz
35%
KCl
10%
Colour reagent
36%
Impurities
20%
All of the above
Feldspars is primary mineral that occurs predominantly in
Anonymous Quiz
64%
Igneous rock
20%
Sedimentary rock
6%
Metamorphic rocks
10%
All of the above
Carbon dioxide content in rainwater is
Anonymous Quiz
31%
0.35%
55%
0.45%
10%
0.55%
3%
0.65%
Bedrock is absent in which soil?
Anonymous Quiz
17%
Black soil
7%
Red soil
57%
Alluvial soil
19%
Forest soil
The honey-comb structure found in
Anonymous Quiz
14%
Alluvial soil
17%
Black soil
4%
Saline soil
64%
Laterite soil
Which soil occur mainly a soil crust problem ?
Anonymous Quiz
15%
Sandy soil
49%
Silty clay loam
32%
Clayey soil
3%
Loamy soil