Question

Laterisation involves the following:

• A. Removal of Fe and Al complexed with humus from upper to lower horizon
• B. Removal of silica from soil
• C. Removal of silica and accumulation of sesquioxides in soil
• D. ccumulation of sesquioxides in soil

Hint:

Laterite soils are typically rich in iron and aluminium oxides due to intense leaching of silica.

Answer 1

The Correct Option is C

Step 1: Laterisation is a weathering process typical of hot, humid tropical climates.
Step 2: Under heavy rainfall, silica is preferentially leached downward and out of the soil profile.
Step 3: Iron and aluminium oxides (sesquioxides) are relatively insoluble and stay behind, becoming concentrated.
Step 4: The correct answer is removal of silica and accumulation of sesquioxides in soil.