The correct match between Item-I (starting material) and Item-II (reagent) for the preparation of benzaldehyde is :

Item-I	Item-II
(I) Benzene	(P) HCl and SnCl2, H3O+
(II) Benzonitrile	(Q) H2, Pd-BaSO4, S and quinoline
(III) Benzoyl Chloride	(R) CO, HCl and AlCl3

If the solubility product of AB₂ is 3.20 $$ \times $$ 10^–11 M³, then the solubility of AB₂ in pure water is _____ $$ \times $$ 10^–4 mol L^–1.
[Assuming that neither kind of ion reacts with water]

Match the following :

Test/Method	Reagent
(i) Lucas Test	(a) C6H5SO2Cl/ aq. KOH
(ii) Dumas method	(b) HNO3/ AgNO3
(iii) Kjeldahl’s method	(c) CuO/CO2
(iv) Hinsberg test	(d) Conc. HCl and ZnCl2
	(e) H2SO4

The increasing order of the boiling points of the major products A, B and C of the following reactions will be :