Soil Science Quiz | Soil Science MCQs and Answers

Questions
81 Spectrophotometer is used for determination of _____
A N
B P
C K
D All of the above

Answer: P
82 Which instrument is used for the estimation of potash (K)
A Spectrophotometer
B Flamephotometer
C Colorimeter
D Atomic absorption

Answer: Flamephotometer

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83 KMnO4 (potassium permanganate) is used for __________
A Available nitrogen
B Organic carbon
C Available phosphorus
D Available potassium

Answer: Available nitrogen
84 Which method used for determination of available phosphorus in acid soil
A Bray
B Olsen
C Walkley and Black
D Jackson

Answer: Bray
85 Olsen method is used for phosphorus estimation
A Acidic soil
B Neutral to alkali soil
C Saline soil
D All of the above

Answer: Neutral to alkali soil
86 The unit used for the measurement of electrical conductivity is _____
A dS/m
B uS/cm
C mg/m
D Both A and B

Answer: Both A and B
87 EC (electrical conductivity) meter measures
A Total salt in soil
B Soluble salt in soil
C Both the salt
D None of the above

Answer: Soluble salt in soil
88 pH meter measures
A H ions activity
B H ions concentration
C Al ions
D All of the above

Answer: H ions activity
89 Which clay mineral is responsible for cracking in black soil?
A Kaolinite
B Illite
C Vermiculite
D Montmorillonite

Answer: Montmorillonite
90 Which one is lower category for classification of soil?
A Soil order
B Family
C Soil series
D None of the above

Answer: Soil series
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