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Free download in PDF Soil Science Short Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
41
Red colour of soil is due to _____
[A]
Hematite
[B]
Geothite
[C]
Glauconite
[D]
Maghemite
42
Which soil occur mainly a soil crust problem?
[A]
Sandy soil
[B]
Silty clay loam
[C]
Loamy soil
[D]
Clayey soil
43
The honey-comb structure found in _____
[A]
Alluvial soil
[B]
Black soil
[C]
Saline soil
[D]
Laterite soil
44
Kari is the local name of _____
[A]
Acid soil
[B]
Saline soil
[C]
Acid sulfate soil
[D]
Alkali soil
Answer: Acid sulfate soil
45
Saline soil also known as _____
[A]
Solonchalk
[B]
Solonetz
[C]
Sodochalk
[D]
None of the above
46
Bedrock is absent in which soil?
[A]
Black soil
[B]
Red soil
[C]
Alluvial soil
[D]
Forest soil
47
In which point resistant to wind erosion in soil
[A]
Permanent wilting point
[B]
Hygroscopic point
[C]
Field capacity
[D]
None of the above
Answer: Permanent wilting point
48
CO2 content in rainwater is _______
[A]
0.35%
[B]
0.45%
[C]
0.25%
[D]
0.15%
49
Feldspars is primary mineral that occurs pre-dominantly in ________
[A]
Igneous rock
[B]
Sedimentary rock
[C]
Metamorphic rocks
[D]
All of the above
50
Reddish colour in muriate of potash is due to _____
[A]
KCl
[B]
Colour reagent
[C]
Impurities
[D]
All of the above
51
Which chemical compound is used for improve soil aeration, infiltration and water holding capacity of soil
[A]
Jalshakti
[B]
Fentachlore
[C]
Hydrotech
[D]
None of the above
52
Hydraulic conductivity is found to decrease in the following order
[A]
K soil > Ca – soil > Na – soil
[B]
Na – soil > K – soil > Ca – soil
[C]
Ca – soil < K – soil < Na – soil
[D]
Ca – soil > K – soil > Na – soil
Answer: Ca – soil > K – soil > Na – soil
53
Saturated hydraulic conductivity is measured by _____
[A]
Pycnometer
[B]
Tensiometer
[C]
Amoozemeter
[D]
Hydrometer
54
Organic matter obtained
[A]
OC x 1.724
[B]
OC x 2.24
[C]
OC x 1.55
[D]
OC x 1.64
55
Improper development of wheat inflorescence is due to deficiency of _____
[A]
Molybdenum
[B]
Boron
[C]
Calcium
[D]
Magnesium
56
Which element suppressed Downey mildew of pear millets?
[A]
Chloride
[B]
Fluoride
[C]
Bromide
[D]
Lithium
57
Ammonia volatilization is purely process of _____
[A]
Physical
[B]
Chemical
[C]
Biological
[D]
None of the above
58
For mineralization of P optimum ratio of C:N:P should be _____
[A]
100:10:1
[B]
50:10:1
[C]
80:10:1
[D]
30:10:1
59
The peak microbial population was observed in soil generally after addition of residue
[A]
3-4 week
[B]
2-3 week
[C]
3-4 days
[D]
1-2 week
60
Nitrification rapid in _____ season
[A]
Winter
[B]
Rainy
[C]
Summer
[D]
All of the above
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