Question:
Laterisation involves the following:
Laterisation involves the following:
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Laterite soils are typically rich in iron and aluminium oxides due to intense leaching of silica.
Updated On: Jul 2, 2026
- Removal of Fe and Al complexed with humus from upper to lower horizon
- Removal of silica from soil
- Removal of silica and accumulation of sesquioxides in soil
- ccumulation of sesquioxides in soil
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The Correct Option is C
Approach Solution - 1
Laterisation is the process where silica is leached from the soil profile while Fe and Al oxides accumulate, leading to sesquioxides dominance in the soil.
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Approach Solution -2
Elimination approach:
Laterisation is a tropical weathering process, so we can rule out any option that keeps silica in the profile. Option (b), "Removal of silica from soil" alone, is incomplete because removing silica has a counterpart: something must be left behind and concentrated. Option (a), Fe and Al moving from upper to lower horizon, actually describes podzolisation, a temperate-climate process, not laterisation. Only when the loss of silica is combined with the resulting build-up of iron and aluminium oxides (sesquioxides) do we get the full picture of laterisation, which is exactly what option (c) states.
Laterisation is a tropical weathering process, so we can rule out any option that keeps silica in the profile. Option (b), "Removal of silica from soil" alone, is incomplete because removing silica has a counterpart: something must be left behind and concentrated. Option (a), Fe and Al moving from upper to lower horizon, actually describes podzolisation, a temperate-climate process, not laterisation. Only when the loss of silica is combined with the resulting build-up of iron and aluminium oxides (sesquioxides) do we get the full picture of laterisation, which is exactly what option (c) states.
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