Organic Chemistry

General Organic Chemistry

36 questions in this chapter.

Study loop for General Organic Chemistry

1. Practise the PYQsPrevious-year questions, with answers

Acidity Basicity

ABC26OR0771 · Arrange the following in the decreasing order of acidity of the hydrogen indicated in italic (i) CH3 COCH3 (ii) CH3 COCH2 COCH3 (iii) CH3… · 2005-2022
ABC26OR0006 · The correct order of acidity of the following compound A-C is: · JUNE 2011
ABC26OR0014 · The correct order of acidity of the compounds A-C is: A B C · DEC 2012
ABC26OR0790 · The compound that contains the most acidic hydrogen is · 2005-2022
ABC26OR0031 · The increasing order of pKa values of the circled hydrogens in the following compounds is (I) (II) (III) · DEC 2014

Aromaticity

ABC26OR0773 · The value of 'n' for the following molecule according to Huckel's rule is · 2005-2022
ABC26OR0010 · With respect to electrophilic aromatic substitution, reactivity order of pyrrole, pyridine and indole is · JUNE 2011
ABC26OR0029 · The correct order for the rates of electrophilic aromatic substitution of the following compound is (I) (II) (III) · DEC 2013
ABC26OR0030 · The compound that is antiaromatic is (I) (II) (III) (IV) · DEC 2014

Carbocation Stability

ABC26OR0005 · The relative rates of solvolysis of iodides A-C are · JUNE 2011

Conformational Analysis

ABC26OR0003 · In the most stable conformation of trans-1-t-butyl-3-methylcyclohexane, the substituents at C–1 and C–3, respectively, are · JUNE 2011
ABC26OR0039 · The correct statements about conformations X and Y of 2-butanone are (X) (Y) (A) X is more stable than Y (B) Y is more stable than X (C)… · JUNE 2015

General Organic Chemistry – General

ABC26OR0019 · In the compound given below, the hydrogens marked A and B are · JUNE 2013
ABC26OR0024 · The two benzylic hydrogens HA and HB in the compounds I and II, are (I) (II) · DEC 2013
ABC26OR0028 · Consider the following statements about cis- and trans-decalins (A) cis-isomer is more stable than trans-isomer (B) trans-isomer is more… · DEC 2013
ABC26OR0040 · The correct order of magnitude of 'A values' for the given substituents in cyclohexane derivatives is X = CH3, CN, Ph · JUNE 2015
ABC26OR0045 · Methyl groups in the following compound are · DEC 2016
ABC26OR0054 · For the following compounds, the correct order of reactivity towards nucleophilic acyl substitution is · JUNE 2018
ABC26OR0061 · In the following equilibrium, conformer B is more stable than A when R is A · JUNE 2019
ABC26OR0064 · The correct order for the rate of thermal decarboxylation of the following compounds is A B C · DEC 2019
ABC26OR0071 · The number of geometrical isomers of the complex [RhH(C ≡ CR)2 (PMe3)3] · DEC 2019

Nomenclature Polycyclics

ABC26OR0008 · The IUPAC name of the following compound is · JUNE 2011
ABC26OR0012 · The IUPAC name of the compound given below is: · JUNE 2012
ABC26OR0018 · The IUPAC name for the compound given below is · JUNE 2013
ABC26OR0023 · The IUPAC name of the compound given below is · DEC 2013
ABC26OR0048 · The IUPAC name of the following compound is · JUNE 2017
ABC26OR0056 · IUPAC nomenclature of the following propellane is · JUNE 2018

Stereochemistry R S E Z

ABC26OR0011 · An optically active compound enriched with R-enantiomer (60% ee) exhibited [ alpha]D+90°. If the [ alpha]D value of the sample is -135°… · JUNE 2011
ABC26OR0013 · Epoxidation of (R)-cyclohex-2-enol with peracetic acid yields a 95:5 mixture of compounds A and B. Compounds A and B are · JUNE 2012
ABC26OR0015 · The absolute configuration at the two chiral centres of (-)-camphore is: · DEC 2012
ABC26OR0026 · The absolute configuration of the two stereogenic (chiral) centres in the following molecule is · DEC 2013
ABC26OR0027 · The correct statement about the following molecule is · DEC 2013
ABC26OR0034 · The correct relation between the following compounds is · JUNE 2015
ABC26OR0044 · The correct statement about the following compound is · DEC 2016
ABC26OR0059 · Oxidation of A with mathrmHNO3/H2O provides the product (s), which is (are) A · DEC 2018
ABC26OR0060 · Among the following, the optically active compound is · DEC 2018