Discussion
The soil formed by the decomposition of silt brought by rivers is called ...................... .
Answer: C
Soil formed from silt deposited by rivers is alluvial soil.
Alluvium is the sediment of clay, silt and sand carried and laid down by rivers. Alluvial soils cover the Indo-Gangetic plains and the deltas of the east coast; they are among India's most extensive and fertile soils and are renewed by floods.
Red soil develops in place from weathered crystalline rocks, red because of iron oxides. Black soil (regur) forms from weathering of the Deccan basalt. Podzol ('pod soil') is a leached, acidic soil of cool, humid coniferous forests. None is formed from river silt.
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