Practice Test 4
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CEC of humus is

Feldspar is a

Granite and basalt are

  • Solution

    Rock A rock may be defined as an aggregate of one' or more minerals. So, their physical and chemical construction changes according to the properties of minerals present in them. Thus an aggregate of the singal mineral calcite (CaCO3) gives rise to crystalline limestone, where as a granite is a combination of several minerals.

The cation exchange capacity of a mineral soil containing pre-dominantly kaolinitic clay minerals generally ranges
between

Total porosity of a soil with 1.325 g/ cc and 2.65 g/cc PD is

Pedology considers soil as a

Which of the following is the first phase of water erosion?

  • Solution

    Water Erosion It is the process of detachment, transportation and deposition of soil particles by the action of water is called water erosion.

Consider the following types of erosion.

I. Gully erosion
II. Splash erosion
III. Normal erosion
IV. Rill erosion
V. Sheet erosion

The correct sequence in terms of the increasing order of soil loss from the field due to these types of erosion is

The bulk density of a soil With portion density of 2.65 g/cc and pore spall 40% would be

  • Solution

    Bulk Density

    = \(\frac{Weight \; of \; soil}{Volume \; of \; solids \; and \; pores
    }\)

    Partial density = 2.65 g/cc

    Pore space = 40% = 1.06 g/cm3

The organic of ‘organic carbon’ to ‘organic matter’ in soil is

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Soil & Soil Fertility
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