Give a reason why concentrated and not dil H₂SO₄ behaves as an oxidising and dehydrating agent.

Give the equation for the reaction of conc. sulphuric acid with –

(i) glucose

(ii) sucrose

(iii) cellulose

(iv) an organic acid containing one carbon atom and two hydrogen atoms

(v) an organic acid containing two carbon and two hydrogen atoms

(vi) an alcohol

(vii) hydrated copper [II] sulphate

State how addition of –

(i) copper

(ii) NaCl

to hot conc. H₂SO₄ serves as a test for the latter.

Give two tests for dilute sulphuric acid with balanced equations. State why

(i) BaCl₂

(ii) Pb(NO₃)₂

are used for the above tests