Quize on Soil Science

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Quize on Soil Science - 01

Magnesium in octahedral sheet of clay mineral indicates? *

2 points

Dioctahedral

Trioctahedral

Tetrahedral

Monohedral

Hill soils are generally ? *

2 points

Acidic

Alkaline

Neutral

Saline

Aspergillus Niger is used to test the status of which element in the soil ? *

2 points

Hydromorphic soils are evolved by which process ? *

2 points

Calcification

Gleization

Salinization

Solonization

A clay soil must contain at least ....... clay separate, to be designated a clay? *

2 points

70%

80%

40%

35%

The nitrogenous fertilizer of choice for Tea is ? *

2 points

CAN

Urea

Ammonium Sulphate

Ammonium nitrate

The value of Von Bemmelon factor is ? *

2 points

0.430

1.200

2.290

1.724

Which of the following is purely a chemical process? *

2 points

Ammonia Volatilization

Denitrification

N-Fixation

Nitrification

Stem nodulating Rhizobium spp. is *

2 points

Sino-Rhizobium

Bradyrhizobium

Azo-Rhizobium

All of the above

Oldest surviving long term manurial trial in India is located at ? *

2 points

Kanpur

Coimbatore

Bijapur

Pusa, Bihar

Organic matter content of Histosols and Hydromorphic soils is *

2 points

30-40%

50-57%

60-70%

2-18%

Total porosity of a soil with 1.325 g/cc B.D. and 2.65 g/cc P.D. is *

2 points

30%

40%

50%

60%

Black soils of Maharashtra belongs to which soil order? *

2 points

Alfisols

Entisols

Ultisols

Vertisols

Ammonium Sulphate contains how much N ? *

2 points

18%

25%

21%

33%

Which of the following is a Manganese containing mineral ? *

2 points

Magnetite

Tourmaline

Apatite

Pyrolusite

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