railway RRB ALP (CBT 1 + CBT 2 + CBAT) Mock Test Series 2025 (New) General Science Chemistry Chemical Reaction
Among the chemical reactions given below, identify the double decomposition reaction.
1
\(\rm 6CO_2+6H_2O\rightarrow C_6H_{12}O_6+6O_2\)
2
\(\rm 4Fe+3O_2\rightarrow 2Fe_2O_3\)
3
\(\rm H_2CO_3\rightarrow CO_2+H_2O\)
4
\(\rm CuSO_4+Fe\rightarrow FeSO_4+Cu\)