Soil Science Quiz | Soil Science Short Questions and Answers

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Questions
41 Red colour of soil is due to _____
A Hematite
B Geothite
C Glauconite
D Maghemite

Answer: Hematite
42 Which soil occur mainly a soil crust problem?
A Sandy soil
B Silty clay loam
C Loamy soil
D Clayey soil

Answer: Silty clay loam
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43 The honey-comb structure found in _____
A Alluvial soil
B Black soil
C Saline soil
D Laterite soil

Answer: 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

Answer: Solonchalk
46 Bedrock is absent in which soil?
A Black soil
B Red soil
C Alluvial soil
D Forest soil

Answer: Alluvial 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%

Answer: 0.45%
49 Feldspars is primary mineral that occurs pre-dominantly in ________
A Igneous rock
B Sedimentary rock
C Metamorphic rocks
D All of the above

Answer: Igneous rock
50 Reddish colour in muriate of potash is due to _____
A KCl
B Colour reagent
C Impurities
D All of the above

Answer: Impurities
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

Answer: Jalshakti
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

Answer: Amoozemeter
54 Organic matter obtained
A OC x 1.724
B OC x 2.24
C OC x 1.55
D OC x 1.64

Answer: OC x 1.724
55 Improper development of wheat inflorescence is due to deficiency of _____
A Molybdenum
B Boron
C Calcium
D Magnesium

Answer: Boron
56 Which element suppressed Downey mildew of pear millets?
A Chloride
B Fluoride
C Bromide
D Lithium

Answer: Chloride
57 Ammonia volatilization is purely process of _____
A Physical
B Chemical
C Biological
D None of the above

Answer: Chemical
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

Answer: 100:10:1
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

Answer: 1-2 week
60 Nitrification rapid in _____ season
A Winter
B Rainy
C Summer
D All of the above

Answer: Summer

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