Sodium chloride when heated with conc. `H_(2)SO_(4)` and solid potassium dichromate gives

Sodium chloride when heated with Conc. H_2SO_4 and solid potassium dichromate gives :

Glycerol when heated with conc. H_(2)SO_(4) gives

Write the balanced chemicalm equations for the following reactions (i) A mixture of potassium dichromate and sodium chloride is heated with concentrated H_(2)SO_(4) (ii) Potassium permanganate is added to a hot solution of manganous sulphate.

When aluminium is heated with conc. H_(2)SO_(4)

Oxalic acid on heating with conc. H_(2)SO_(4) gives