State – How will you distinguish between dilute hydrochloric acid and dilute sulphuric acid using lead nitrate solution.

Write balanced chemical equations to show –

(i) The oxidizing action of conc. sulphuric acid on carbon.

(ii) The behaviour of H₂SO₄ as an acid when it reacts with magnesium.

(iii) The dehydrating property of conc. sulphuric acid with sugar.

(iv) The conversion of SO₃ to sulphuric acid in the Contact process.

Write a balanced chemical equation for - Action of concentrated sulphuric acid on carbon.

State which property of sulphuric acid is shown by the reaction of concentrated sulphuric acid with:

(i) Ethanol

(ii) Carbon