Consider the following statements, cation exchan of soil colloidal clay is due to
I. silicon tetrahedral layer
II. isomorphious substitution
III. hydration of clays
IV. broken edges of clay lattices Codes
Silica-sesquioxide ratio is useful in the evaluation of soil in respect of
In soil Taxonomy udolls is a suborder of
The concept of is suggested by the scientist
-
Solution
pH Soil pH or soil reaction is an indication of the acidity or alkalinity of soil and is measured in pH is defined as the negative logarithm of the hydrogen ion concentration, The pH scale goes From 0 to 14 with pH 7 as the neutral point. From pH 7 to 0 the soil is increasingly more acidic and from pH 7 to 14 the soil is increasingly more alkaline or basic.
The occurrence of quartz in high amounts makes a rock
Deforestation has an alarming affect on
-
Solution
Deforestation It has an alarming effect on soil erosion because bare land enhance the erosion.
The capacity of soil to be molded when wet i.e., to change shape in response to stress and to maintain that shape when the stress is removed is termed
Which one of the following minerals is the main source of boron in soils?
-
Solution
Source of Boron Tourmaline is a major source of boron.
=> Pyrolusite is the source of Mn.
=> Olivine is the source of molybdenum (Mo)
The mineral chlorite has an extra layer of
A soil layer of maximum leaching is indicated by the symbol of