Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Environmental Science Environmental Geosciences
Among the given reactions, the reaction which does not occur in the process of chemical weathering is:
1
\( \text{Al}_2\text{O}_3 + 3\text{H}_2\text{O} \rightarrow \text{Al}_2\text{O}_3 \cdot 3\text{H}_2\text{O} \)
2
\(2\text{Fe}_2\text{O}_3 + 3\text{H}_2\text{O} \rightarrow 2\text{Fe}_2\text{O}_3 \cdot 3\text{H}_2\text{O} \)
3
\( \text{CaCO}_3 + \text{H}_2\text{CO}_3 \rightarrow \text{Ca}^{2+} + 2\text{HCO}_3^{-}\)
4
\( \text{FeO} + \text{O}_2 + \text{H}_2\text{O} \rightarrow \text{Fe(OH)}_3 \)