A. Calcification
B. Horizonation
C. Illuviation
D. Humification
Submitted by: Shafiq Rehman
Related Mcqs:
- 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 & bSubmitted 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 aboveSubmitted 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 cSubmitted 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 aboveSubmitted 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
- Humus generally refers to the decomposed organic residues which have undergone a series of degradation and synthesis cycles. The humic substances consist of a series of highly acidic, yellow to black coloured, high molecular weight compounds __________________, which can be separated using different extraction procedures:
A. Hymatomelanic acid & Humin
B. Humic acid & Fulvic acid
C. both A & B
D. None of theseSubmitted 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 aboveSubmitted by: Shafiq Rehman
- Clear water with organic matter or sediment and minimum biological activity is known as__________________?
A. Oligotrophic
B. Mestrophic
C. Eutrophic
D. Hydrotrophic - Although some acid soils do exist in the northern mountainous regions of Pakistan (Mansehra, Sawat, Dir). Almost all cultivated soils of the country are ________________, with high base saturation and low organic matter content (generally less than 1%)?
A. Alkaline
B. Very much acidic
C. Calcareous
D. both A & CSubmitted by: Shafiq Rehman
- During decomposition of organic matter, inititial decomposition is dominated by:__________?
A. Actinomycetes
B. Bacteria
C. Fungi
D. Both B & CSubmitted by: Shafiq Rehman