In deserts wet tropics the rate of chemical weathering is faster.
The correct option is b.
Rainwater interacting with the mineral grains in rocks to create new minerals (clays) and soluble salts is known as chemical weathering. These reactions occur mainly when the water is somewhat acidic.
Warm, humid conditions are ideal for these chemical reactions since they require water and develop more quickly at higher temperatures. The initial phase in the formation of soils is known as chemical weathering, particularly hydrolysis and oxidation.
Chemical weathering typically occurs in hot, humid (deserts wet tropics) climates with a lot of water. When exposed to heavy rainfall and high temperatures, rocks in humid areas deteriorate significantly more quickly than comparable rocks found in cold, dry areas (desert). Therefore, in humid areas, the chemical weathering process predominates over the mechanical process.
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