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Free download in PDF Soil Science MCQs 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.
81
Spectrophotometer is used for determination of _____
[A]
N
[B]
P
[C]
K
[D]
All of the above
82
Which instrument is used for the estimation of potash (K)
[A]
Spectrophotometer
[B]
Flamephotometer
[C]
Colorimeter
[D]
Atomic absorption
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
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
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
89
Which clay mineral is responsible for cracking in black soil?
[A]
Kaolinite
[B]
Illite
[C]
Vermiculite
[D]
Montmorillonite
90
Which one is lower category for classification of soil?
[A]
Soil order
[B]
Family
[C]
Soil series
[D]
None of the above
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