MCQ
$ng$ of substance $X$ reacts with $mg$ of substance $Y$ to form $pg$ of substance $R$ and $qg$ of substance $S$. This reaction can be represented as, $X + Y \rightarrow R + S$. The relation which can be established in the amounts of the reactants and the products will be
- A$n - m = p - q$
- ✓$n + m = p + q$
- C$n = m$
- D$p = q$
