Organic (O) horizon is absent in_________?

A. Mollisols
B. Histosols
C. Arable soils
D. Non-arable soils

Submitted by: Shafiq Rehman

Related Mcqs:

A mineral horizon that is either too thin, too light in colour, too low in organic matter:
A. Umbric epipedon
B. Melanic epipedon
C. Mollic epipedon
D. Ochric epipedon
Submitted by: Shafiq Rehman
The indicator used for the the estimation of the organic matter or organic carbon is;_________?
A. Mixed indicator
B. Diphenylamine indicator
C. Both a and b
D. None of the above
Submitted by: Shafiq Rehman
Soils that have more than 20% organic matter are termed as organic soils. These are also called:________?
A. Peat soil
B. solonchalk soil
C. Muck soil
D. Both a and c
Submitted by: Shafiq Rehman
Walkley and blacks method of organic matter determination allows recovery of ______ ℅ organic carbon content:
A. 44 ℅
B. 45 ℅
C. 33℅
D. None of the above
Submitted by: Shafiq Rehman
Walkley and Blacks method of organic matter determination allows recovery of _____% organic carbon content:
A. 74 %
B. 54 %
C. 62.5 %
D. 34%
Submitted by: Shafiq Rehman
Soil Organic Matter (SOM) which consists of about _______ % organic carbon plays a vital role by providing macro & micro nutrients:
A. 72 %
B. 58%
C. 62 %
D. Al of the above
Submitted by: Shafiq Rehman
Organic matter decomposes rapidly in Pakistani soils because of ____________ conditions, that is why our soils generally have < 1% organic matter:
A. High temperature
B. Alkaline
C. Both a & b
D. None of a & b
Submitted by: Shafiq Rehman
Soil particles as individuals such as sand and do not form aggregates. These are usually found in parent material or C horizon is:_________?
A. Massive
B. Single-grained
C. Aggregated
D. All of the above
Submitted by: Shafiq Rehman
‘A’ horizon of the soil is also designated:
A. Eluvistal horizon
B. Illuviated horizon
C. Alluvial horizon
D. None of the above.
Submitted by: Shafiq Rehman
“Wash-in” takes place in which horizon?
A. E
B. O
C. B
D. A
Submitted by: Shafiq Rehman