Tag: organic compounds containing nitrogen

Questions Related to organic compounds containing nitrogen

Cyanide group on hydrolysis give:

chemistry organic compounds containing nitrogen chemical reactions of diazonium salts chemical properties of diazonium salts diazonium salts

  1. acid

  2. acetamide

  3. amine

  4. hydrate

Show answer
Correct Option: A
Explanation:
$\displaystyle \underset{Cyanide}{RCN} \xrightarrow{H _2O} \underset{Amide}{RCONH _2}   \xrightarrow{H _2O} \underset{Acid}{RCOOH} + \underset{Ammonia}{NH _3}$
$\therefore $ Hydrolysis of cyanide results in formation of acid.

The reagent commonly used to determine hardness of water titrimetrically is:

chemistry organic compounds containing nitrogen chemical reactions of diazonium salts chemical properties of diazonium salts diazonium salts

  1. Oxalic acid

  2. Disodium salt of EDTA

  3. Sodium citrate

  4. Sodium thiosulphate

  5. None of these

Show answer
Correct Option: B
Explanation:

The total hardness of water (i.e. the concentration of dissolved cations such as $Ca^{2+}, Mg^{2+}, Fe^{3+}$ etc.) is commonly determined by the titration of a water sample with a standardized solution of the disodium salt of ethylenediaminetetraacetic acid (EDTA) using eriochrome black T or calmagite as an indicator. Calmagite has the advantage of forming indefinitely stable solutions and will be substituted without any other modification to the procedure.
Hence option B is correct.

Shweta found her pet's cloth discoloured and decided to renovate the dress by colouring it. Which of the following solution of compound should she choose to do so?

chemistry organic compounds containing nitrogen chemical reactions of diazonium salts chemical properties of diazonium salts diazonium salts

  1. Ammonia

  2. Ester

  3. Diazonium salts

  4. Aldehyde

Show answer
Correct Option: C
Explanation:

Diazonium salts are used for making azo dye at lone temperature by coupling with $\beta$-naphthol or any other alcohol. and is used for dyeing clothes.

Which of the following compound should we choose with Aryldiazonium salt to produce Azo dyes?

chemistry organic compounds containing nitrogen chemical reactions of diazonium salts chemical properties of diazonium salts diazonium salts

  1. Phenol

  2. Arylamines

  3. Both A and B

  4. Diazonium salt is already coloured

Show answer
Correct Option: C
Explanation:

Aryldiazonium salt when taken with phenol or arylamines produces azo dyes.

When diazonium salt solution is treated with water at a temperature of 283 K it forms:

chemistry organic compounds containing nitrogen chemical reactions of diazonium salts chemical properties of diazonium salts diazonium salts

  1. ester

  2. alcohol

  3. amines

  4. phenol

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Correct Option: D

Which of the following is correct method to convert p-toluidine to p-toluic acid?

chemistry organic compounds containing nitrogen chemical reactions of diazonium salts chemical properties of diazonium salts diazonium salts

  1. $ Diazotisation, \, CuCN, \, H _2/Pd$

  2. $CHCl _3/NaOH,\, KCN, \, Sn/HCl$

  3. $ Diazotisation, \, CuCN/KCN, H _2O/H^+$

  4. $ Diazotisation, \, NaCN, \, NaOH$

Show answer
Correct Option: C

Aniline and N-methylaniline can be distinguished by using the:
(A) Hoffman Mustard oil reaction
(B)  Hinsberg reagent
(C)  Carbylamine test
(D)   Mulliken Test

distinction between pairs of amines organic compounds containing nitrogen organic compounds with functional group containing nitrogen chemistry

  1. B and C

  2. C only

  3. A, B and C

  4. A, B, C and D

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Correct Option: A

Nitration of acetanilide followed by hydrolysis gives

distinction between pairs of amines organic compounds containing nitrogen organic compounds with functional group containing nitrogen chemistry

  1. Ortho nitro aniline

  2. Para nitroaniline

  3. Ortho and para nitroaniline

  4. Ortho nitro anilinium ion

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Correct Option: B

The reaction between primary amine, chloroform and few drops of alcoholic KOH is known as: 

distinction between pairs of amines organic compounds containing nitrogen organic compounds with functional group containing nitrogen chemistry

  1. Hofmann's reaction

  2. Reimer-Tiemann's reaction

  3. Carbylamine reaction

  4. Kolbe's reaction

Show answer
Correct Option: C
Explanation:
Carbylamine reaction:
$C{ H } _{ 3 }C{ H } _{ 2 }N{ H } _{ 2 }+CH{ Cl } _{ 3 }+3KOH\longrightarrow C{ H } _{ 3 }C{ H } _{ 2 }NC+3KCl+3{ H } _{ 2 }O$
It forms isocyanide.

Aniline and diphenylamine may be distinguished by:

distinction between pairs of amines organic compounds containing nitrogen organic compounds with functional group containing nitrogen chemistry

  1. lassaignes test

  2. schiffs test

  3. carbyl amine reaction

  4. solubility test

Show answer
Correct Option: C
Explanation:

Aniline and diphenylamine may be distinguished by carbylamine reaction.
Aniline is a primary amine and diphenylamine is a secondary amine.
carbylamine reaction is given by primary amines. It is not given by secondary or tertiary amines.
In Hoffmann's carbylamine test (also known as Isocyanide test), aliphatic or aromatic primary amine is heated with chloroform  in presence of alcoholic potassium hydroxide to give foul smelling alkyl/aryl  isocyanide or carbylamine.
$\underset {} {C _6H _5-NH _2} + CHCl _3  + 3KOH  \xrightarrow {heat} C _6H _5-NC  + 3KCl + 3H _2O$