(i) `MmOo_(s)+oH_(2)(g) overset("heat")to mM(s)+oH_(2)(l)`
(ii) `Co(g)+2H_(2)(g) underset("heat")overset("Co-catalyst")to underset("Methyl alcohol")(CH_(3)OH(l))`
(iii) `C_(3)H_(8)(G)+3H_(2)O(g) underset(1270K)overset("Ni-catalyst")to 3CO(g)+7H_(2)(g)`
`Zn(s)+2NaOH(aq) overset("heat")to underset("Sod. zincate")(Na_(2)ZnO_(2)(aq)+H_(2)(g))`