निम्नलिखित समीकरणों को पूरा कीजिए -
(i) ` H_2 (g) + M_m O _o (s) overset (Delta ) to `
(ii) `CO(g) + H_2(g) overset(Delta ) underset (catalyst ) to `
(iii) `C_3 H_8(g) + 3 H_2 O (g) overset (Delta ) underset ( catalyst ) to `
(iv) `Zn(s) + NaOH(aq) overset (heat) to `