Balance the following equations by hit and trial method:
(a) `KMnO_(4) + HCl to KCl + MnCl_(2) + H_(2)O + Cl_(2)`
(b) `H_(2)S + SO_(2) to S + H_(2)O`
( c) `K_(2)Cr_(2)O_(7) + H_(2)SO_(4) to K_(2)SO_(4) + Cr_(2)(SO_(4))_(2) + H_(2)O + O_(2)`
(d) `KMnO_(4) + KOH to K_(2)MnO_(4) + O_(2) + H_(2)O`
(e) `Mg_(3)N_(2) + H_(2)O to Mg(OH)_(2) + NH_(3)`
(f) `Al_(4)C_(3) + H_(2)O to Al(OH)_(3) + CH_(4)`
(g) `FeS_(2) + O_(2) to Fe_(2)O_(3) + SO_(2)`
(h) `KMnO_(4) + H_(2)S + H_(2)SO_(4) to KHSO_(4) + MnSO_(4) + S + H_(2)O`
(i) `C_(3)H_(8)(g) + O_(2)(g) to CO_(2)(g) + H_(2)O(l)`

Answer

A, B, C, D