PYQSide ExamsMy practice

Amines · Question 39

AIPMT 2011 (Mains)MCQEasy📈 Topic in 25% papers+4−1
1

Which of the following compounds is most basic?

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

Answer

(2) [figure]

Solution

In aniline, p-nitroaniline and acetanilide the lone pair on N is delocalised into the benzene ring (and in acetanilide also onto the C=O group); the -NO2 group withdraws electrons further.

In benzylamine (C6H5CH2NH2) the -NH2 group is attached to an sp3 carbon, so its lone pair is not delocalised – it behaves like an alkylamine.

As per NCERT, pKb of benzylamine = 4.70 while that of aniline = 9.38.

∴ Basic strength: benzylamine > aniline > p-nitroaniline, acetanilide

Answer: (2)

AIPMT 2011 (Mains)

Keep practising — Amines

2

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)
3

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

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

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)
5

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)
6

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)
7

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)
8

Predict the product. [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2009
9

In a reaction of aniline a coloured product C was obtained. [figure] The structure of C would be

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2008
10

Which one of the following on reduction with lithium aluminium hydride yields a secondary amine?

  1. Methyl isocyanide
  2. Acetamide
  3. Methyl cyanide
  4. Nitroethane
AIPMT 2007
11

In a set of reactions propionic acid yielded a compound D. CH3CH2COOH SOCl2 B NH3 C [Br2]KOH D The structure of D would be

  1. CH3CH2NH2
  2. CH3CH2CH2NH2
  3. CH3CH2CONH2
  4. CH3CH2NHCH3
AIPMT 2006

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