ibps-so 2014 · Question 12 of 40
Red, yellow, grey and bluish-grey colours result from iron in various forms. Under average conditions of air and moisture, iron forms a yellow oxide imparting a yellow colour to the soil. Where soils are well draining or under dry conditions, iron forms red oxides imparting a red colour to the soil.
Source: IBPS SO Agricultural Field Officer (Scale I) Mains 2014 Memory Based (CareerPower) · memory-based
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