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101.

Which of the following horizons is generally referred to as the illuvial zone?

A.	Horizon-B	B.	Horizon-A
C.	Horizon-O	D.	Horizon-C

102.

Soils having sub-optimum concentration of nutrient solution are called:

A.	Hypotrophic	B.	Eutrophic
C.	Heterotrophic	D.	Oligotrophic

103.

Soil formation is initiated by the phenomenon of:

A.	Weathering	B.	Gleization
C.	Laterization	D.	Pedogenesis

104.

Soils transported by air is called:

A.	Eolian	B.	Aerial
C.	Residual	D.	Colluvial

105.

The phenomenon describing the formation of a blue-grey coloured layer at the bottom of the solum due to ferrous compounds is:

A.	Gleization	B.	Mineralization
C.	Laterization	D.	Podsolization

106.

What is the best pH of soil for cultivation?

A.	3.8-5.4	B.	6.5-7.5
C.	4.5-8.5`	D.	5.5-6.5

107.

Soil particles of size 0.03 mm belong to the class of:

A.	Coarse sand	B.	Silt
C.	Fine sand	D.	Clay

108.

The permanent aggregates of soil are called:

A.	Blocks	B.	Clods
C.	Peds	D.	Plates

109.

The term 'chesard' refers to:

A.	Gravitational water	B.	Capillary water
C.	Run off water	D.	Water vapour

110.

Humus is:

A.	Fully decomposed organic matter only	B.	Party dcomposed organic matter + CO2
C.	Minerals and fully decomposed organic matter	D.	Partly decomposed organic matter + mineral + water