PYQSide ExamsMy practice

Amines · Question 36

NEET 2013 (Karnataka)MCQMedium📈 Topic in 62% papers+4−1
1

Some reactions of amines are given. Which one is not correct?

  1. [figure]
  2. CH3CH2NH2 + HNO2 CH3CH2OH + N2
  3. CH3NH2 + C6H5SO2Cl CH3NHSO2C6H5
  4. (CH3)2NH + NaNO2 + HCl (CH3)2N-N=O

Answer

(1) [figure]

Solution

(1) Only primary aromatic amines form arenediazonium salts with NaNO2 + HCl. N,N-Dimethylaniline is a tertiary amine, so no diazonium salt is formed; it undergoes electrophilic substitution at the para position giving p-nitroso-N,N-dimethylaniline:

(CH3)2N-C6H5 + HNO2 (CH3)2N-C6H4-NO (para) + H2O

⇒ reaction (1) is not correct.

(2) Primary aliphatic amines with nitrous acid give alcohols with evolution of N2 ⇒ correct.

(3) A primary amine with benzenesulphonyl chloride (Hinsberg's reagent) gives N-alkylbenzenesulphonamide ⇒ correct.

(4) A secondary amine with nitrous acid gives an N-nitrosoamine ⇒ correct.

Answer: (1)

NEET 2013 (Karnataka)

Keep practising — Amines

2

An organic compound (C3H9N) (A), when treated with nitrous acid, gave an alcohol and N2 gas was evolved. (A) on warming with CHCl3 and caustic potash gave (C) which on reduction gave isopropylmethylamine. Predict the structure of (A)

  1. [figure]
  2. CH3CH2-NH-CH3
  3. [figure]
  4. CH3CH2CH2-NH2
AIPMT 2012 (Mains)
3

An organic compound A on treatment with NH3 gives B, which on heating gives C. C when treated with Br2 in the presence of KOH produces ethyl amine. Compound A is

  1. CH3COOH
  2. CH3CH2CH2COOH
  3. [figure]
  4. CH3CH2COOH
AIPMT 2011 (Mains)
4

Which of the following compounds is most basic?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2011 (Mains)
5

In a set of reactions m-bromobenzoic acid gave a product D. Identify the product D. [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2011 (Prelims)
6

What is the product obtained in the following reaction? [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2011 (Prelims)
7

Match the compounds given in List-I with their characteristic reactions given in List-II. Select the correct option.

  1. A-(ii), B-(i), C-(iv), D-(iii)
  2. A-(iii), B-(ii), C-(i), D-(iv)
  3. A-(ii), B-(iii), C-(i), D-(iv)
  4. A-(iv), B-(ii), C-(iii), D-(i)
AIPMT 2010 (Mains)
8

Acetamide is treated with the following reagents separately. Which one of these would yield methyl amine?

  1. NaOH/Br2
  2. Sodalime
  3. Hot conc. H2SO4
  4. PCl5
AIPMT 2010 (Prelims)
9

Which of the following statements about primary amines is false?

  1. Alkyl amines are stronger bases than aryl amines.
  2. Alkyl amines react with nitrous acid to produce alcohols.
  3. Aryl amines react with nitrous acid to produce phenols.
  4. Alkyl amines are stronger bases than ammonia.
AIPMT 2010 (Prelims)
10

Aniline in a set of the following reactions yielded a coloured product Y. [figure] The structure of 'Y' would be

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2010 (Prelims)
11

Predict the product. [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2009

All Amines PYQs →

PDFDownload Amines PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Chemistry chapters
Physical ChemistrySome Basic Concepts of ChemistryStructure of AtomStates of MatterThermodynamicsEquilibriumRedox ReactionsSolid StateSolutionsElectrochemistryChemical KineticsSurface Chemistry
Inorganic ChemistryClassification of Elements and Periodicity in PropertiesChemical Bonding and Molecular StructureHydrogens-Block Elementsp-Block Elements (Group 13 & 14)Environmental ChemistryGeneral Principles of Isolation of Elementsp-Block Elements (Group 15–18)d- and f-Block ElementsCoordination Compounds
Organic ChemistryOrganic Chemistry – Some Basic Principles and TechniquesIsomerismHydrocarbonsHaloalkanes and HaloarenesAlcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAminesBiomoleculesPolymersChemistry in Everyday LifePrinciples Related to Practical Chemistry