The correct order of basicity of the following compounds is from

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 Multiple Choice QuestionsMultiple Choice Questions

441.

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


442.

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)


443.

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

  • (NH4)2SO4

  • Ba(N3)2

  • (NH4)2Cr2O7

  • NH4NO2


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444.

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


C.

2<1<3<4

The correct order is 2<1<3<4. Since, more the number of 2° -NH- group, more is the basic nature.
(i) Thus, 3 and 4 are more basic than 1 and 2.
(ii) Between 3 and 4, 4 has one two NH2 group while 3 has only one NH2 group.
     :. 4 is more basic than 3.
(iii) Between 1 and 2, 1 has one -NH2 group with no resonance, thus is more basic than 2.


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445.

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

  • Ethyl chloride

  • Chlorobenzene

  • Benzaldehyde

  • Salicylic acid


446.

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


447.

The reagent with which the following reaction is best accomplished is

                 

  • H3PO2

  • H3PO3

  • H3PO4

  • NaHSO3


448.

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

  • phenylcyanide

  • phenylisonitrile

  • phenylcyanate

  • phenylisocyanate


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449.

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


450.

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


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