Which of the following compounds will be suitable for Kjeldah1’s method for nitrogen estimation?

The increasing order of basicity of the following compounds is:

• (d) < (b) < (a) < (c)

• (a) < (b) < (c) < (d)

• (b) < (a) < (c) < (d)

• (b) < (a) < (d) < (c)

The compound that does not produce nitrogen gas by the thermal decomposition is

• (NH₄)₂SO₄

• Ba(N₃)₂

• (NH₄)₂Cr₂O₇

• NH₄NO₂

The correct order of basicity of the following compounds is

• 1<2<3<4

• 1<2<4<3

• 2<1<3<4

• 4<3<2<1

445.

Amongst the following compounds, the one(s) which readily react with ethanolic KCN.

• Ethyl chloride

• Chlorobenzene

• Benzaldehyde

• Salicylic acid

An amine C₃H₉N reacts with benzene sulphonyl chloride to form a white precipitate which is insoluble in aq. NaOH. The amine is

The reagent with which the following reaction is best accomplished is

• H₃PO₂

• H₃PO₃

• H₃PO₄

• NaHSO₃

The reaction of aniline with chloroform under alkaline conditions leads to the formation of

• phenylcyanide

• phenylisonitrile

• phenylcyanate

• phenylisocyanate

When aniline is nitrated with nitrating mixture in ice cold condition, the major product obtained is

• p-nitroaniline

• 2,4-dinitroaniline

• o-nitroaniline

• m-nitroaniline

The basicity of aniline is weaker in comparison to that of methyl amine due to

• hyperconjugative effect of Me-group in MeNH₂

• resonance effect of phenyl group in aniline

• lower molecular weight of methyl amine as compared to that of aniline

• resonance effect of - NH₂ group in MeNH₂