Question

Laterite soil is rich in

• A. Ca
• B. Fe
• C. C
• D. Cu

Hint:

Laterization is a soil-forming process characterized by silica removal (desilication) and the accumulation of iron and aluminum oxides.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Laterite soils form under high temperatures and heavy, seasonal rainfall.
This climate promotes intense chemical weathering and leaching of mobile elements.

Step 2: Detailed Explanation:
- High rainfall causes silica ($\text{SiO}_2$) and basic cations ($\text{Ca}^{2+}$, $\text{Mg}^{2+}$, $\text{K}^+$) to leach deep into the soil profile.
- Less mobile sesquioxides, primarily oxides and hydroxides of iron ($\text{Fe}$) and aluminum ($\text{Al}$), accumulate in the upper horizons.
- This oxide accumulation gives laterite soils their characteristic reddish-brown color and high iron content.

Step 3: Final Answer:
Laterite soils are rich in iron ($\text{Fe}$).