railway RRB ALP (CBT 1 + CBT 2 + CBAT) Mock Test Series 2025 (New) General Science Chemistry Chemical Reaction
When the process of formation of hydrogen by passing steam over red hot iron is presented in the form of a balanced chemical equation, then the number of water molecules on the left hand side of the equation is ______.
1
three
2
two
3
one
4
four