Write a note on the reduction of nitro benzene under different conditions.

Draw a flow chart to show classification of nitro compound giving examples for each type.

Account for the following:
i) (CH₃)₂ NH is stronger base than NH₃
ii) CH₃CH₂NH₂ is more basic than CH₃CONH₂
iii) Aniline is less basic than Ethyl amine
iv) On sulphonation of aniline, p-amino benzene sulphonic acid is formed.

What happens when ethylamine is treated with
(i) CHCl₃/NaOH
(ii) CS₂
(iii) C₆H₅CHO.

Account for
i) Reduction of CH₃CH gives CH₃CH₂NH₂ while CH₃NC gives (CH₃)₂NH.
ii) (CH₃)₂NH requires two molar proportion of CH₃I to give the same crystalline product formed by (CH₃)₂N with one mole of CH₃l.
iii) Nitration of aniline with conc.HNO₃ may end up with same meta nitro product.
iv) p-toluidine is a stronger base than p-nitroaniline.

Account for the following:
(i) Nitroethane is soluble NaOH
(ii) Nitroethane reacts with nitrous acid
(iii) 2-methyl-2-nitro propane has neither of the properties.

How can the following coversion be effected?
i) Nitrobenzene ⇾ Nitrosobenzene
ii) Nitrobenzene ⇾ Azoxybenzene
iii) Nitrobenzene ⇾ Hydrazobenzene

Write the differences between nitro methane and nitro benzene.

How do primary, secondary and tertiary amines react with nitrous acid?

Write a note on
(i) Carbylamine reaction
(ii) Mustard oil reaction
(iii) Acetylation of benzylamine
(iv) Formation of Schiff's base
(v) Diazotisation reaction

Outline the mechanism of
(a) Nitration of aniline,
(b) Acetylation of aniline.

CuSO₄ on mixing with NH₃ (1:4 ratio) does not give test for Cu²⁺ ions but gives test for SO₄^2- ions. Why?

An Organic compound (A) -C₇H₇NO on treatment with Br₂ and KOH gives an amine (B) which gives carbylamine test. (B) upon diazotization to give(C). (C) on coupling with p.cresol to give compound (D). Identify A. B. C and D with necessary reaction.

An aromatic nitro compound (A) on reduction with Sn / HCl gives compound (B) C₆H₇N which on treatment with Benzoyl chloride in the presence of pyridine to give compound (C) Compound (B) on treatment with CH₃Br to give compound (D) which further reacts with NaNO₂ / HCl to give compound (E) with yellow oil liquid. Identify (A) to (E) and write the reactions.

Write the uses of nitroalkanes.