Which of the following compounds will be suitable for Kjeldah1&rs

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 Multiple Choice QuestionsMultiple Choice Questions

11.

In the chemical reaction, CH3CH2NH2 + CHCl3 + 3KOH → (A) + (B) + 3H2O, the compounds (A) and (B) are respectively

  • C2H5CN and 3KCl 

  • CH3CH2CONH2 and 3KCl

  • C2H5NC and K2CO3

  • C2H5NC and K2CO3

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12.

Which one of the following is the strongest base in aqueous solution?

  • Trimethylamine

  • Aniline

  • Dimethylamine

  • Dimethylamine

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13.

Which one of the following methods is neither meant for the synthesis nor for separation of amines?

  • Hinsberg method

  • Hofmann method

  • Wurtz reaction

  • Wurtz reaction

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14.

Amongst the following the most basic compound is

  • benzylamine

  • aniline

  • acetanilide

  • acetanilide

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15.

Which one the following does not have sp2 hybridized carbon?

  • Acetone

  • Acetamide

  • Acetonitrile

  • Acetonitrile

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16.

Consider the acidity of the carboxylic acids

  • PhCOOH

  • p – NO2C6H4COOH

  • o – NO2C6H4COOH

  • o – NO2C6H4COOH

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17.

Which of the following is the strongest base?

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18.

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


D.

Kjeldahl's method is used for Aniline. This method is used for quantitative analysis of N compound in organic substance (NH3/NH4+).

This method is not used in the case of nitro, azo compounds and also to the compounds containing nitrogen in the ring e.g. Pyridine.


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19.

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)


20.

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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