Soil Pollution MCQs | Soil Pollution MCQs and Answers for competitive exams

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Questions
81 Total soil order found in world?
A 9
B 10
C 11
D 12

Answer: 12
82 Organism utilize carbon from CO2 for their cellular synthesis
A Hetrotrophs
B Chemotrophs
C Autotrophs
D None of the above

Answer: Autotrophs
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83 Actinomycetes prefer which condition for their growth
A Slightly alkaline
B Alkali
C Acidic
D Neutral

Answer: Slightly alkaline
84 Which genera of bacteria found maximum in soil?
A Azotobacter
B Pseudomonas
C Bacillus
D All of the above

Answer: All of the above
85 Which nutrient influence the nodule formation and nitrogen fixation in soil?
A pH
B N
C P
D All of the above

Answer: All of the above
86 Thermophiles organism lies in temperature
A > 45°C
B > 25°C
C < 45°C
D None of the above

Answer: > 45°C
87 N content in thiourea is _________
A 46%
B 36.8%
C 22.5%
D 33%

Answer: 36.8%
88 Microorganism involve in conversion from nitrite to nitrate
A Nitrosomonas
B Nitrobactor
C Pseudomonas
D None of the above

Answer: Nitrobactor
89 Base saturation in lateritic soil
A < 40 %
B > 40%
C < 20%
D > 20%

Answer: > 40%
90 Mica is a type of clay mineral
A 1:1
B 2:1
C 2:1:1
D None of the above

Answer: 2:1
91 The central cation on silica tetrahedron is _____
A Al3+
B Si4+
C Fe2+
D None of the above

Answer: Si4+
92 pF scale for Field capacity is _____
A 2
B 2.5
C 3.5
D All of the above

Answer: 2.5

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