The microrelief of soils produced by expansion and contraction with changes in moisture is known as
A. Fluvial deposits
B. Gilgai
C. Mottling
D. Heaving
Answer: Option B
Solution (By Examveda Team)
The microrelief of soils produced by expansion and contraction with changes in moisture is known as Gilgai microrelief. A gilgai is a small, ephemeral lake from a depression in the soil surface in expanding clay soils. Gilgai is found worldwide wherever cracking clay soils and pronounced wet and dry seasons are present. Gilgai is also called melonholes, crabholes, hogwallows or puff and shelf formations.Related Questions on Soil Science
Sources of negative charges on silicate clays is/are
A. Exposed crystal edges
B. Isomorphus substitution
C. Anion exchange
D. All of these
The most conspicuous chemical change that take place when soil is flooded is reduction of
A. Fe
B. P
C. S
D. None of these

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