MCQ (Single Correct Answer)

1
Match the reactions in List-I with the features of their products in List-II and choose the correct option.

List - I List - II
(P) JEE Advanced 2023 Paper 1 Online Chemistry - Basics of Organic Chemistry Question 1 English 1 (1) Inversion of configuration
(Q) JEE Advanced 2023 Paper 1 Online Chemistry - Basics of Organic Chemistry Question 1 English 2 (2) Retention of configuration
(R) JEE Advanced 2023 Paper 1 Online Chemistry - Basics of Organic Chemistry Question 1 English 3 (3) Mixture of enantiomers
(S) JEE Advanced 2023 Paper 1 Online Chemistry - Basics of Organic Chemistry Question 1 English 4 (4) Mixture of structural isomers
(5) Mixture of diastereomers
JEE Advanced 2023 Paper 1 Online
2
Correct match of the C-H bonds (shown in bold) in Column J with their BDE in Column K is

Column J
Molecule
Column K
BDE (kcal $$mo{l^{ - 1}}$$)
(P) H-CH($$C{H_3}$$)$$_2$$ (i) 132
(Q) H-CH$$_2$$Ph (ii) 110
(R) H-CH=CH$$_2$$ (iii) 95
(S) H-C $$ \equiv $$ CH (iv) 88
JEE Advanced 2021 Paper 2 Online
3
For the following reaction

CH4(g) + Cl2(g) $$\buildrel {light} \over \longrightarrow $$ CH3Cl(g) + HCl (g)

the correct statement is
JEE Advanced 2021 Paper 2 Online
4
Among the following, the conformation that corresponds to the most stable conformation of meso-butane-2,3-diol is
JEE Advanced 2021 Paper 1 Online
5
Newman projections P, Q, R and S are shown below :

JEE Advanced 2020 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 30 English

Which one of the following options represents identical molecules?
JEE Advanced 2020 Paper 1 Offline
6
Which of the following structures has the IUPAC name

3-ethynyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid?
JEE Advanced 2020 Paper 1 Offline
7
The Fischer projection of D-erythrose is shown below :

JEE Advanced 2020 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 32 English 1

D-erythrose and its isomers are listed as P, Q, R, and S in Column - I. Choose the correct relationship of P, Q, R, and S with D-erythrose from Column - II.
JEE Advanced 2020 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 32 English 2
JEE Advanced 2020 Paper 1 Offline
8

Isomers of hexane, based on their branching, can be divided into three distinct classes as shown in the figure.

JEE Advanced 2014 Paper 2 Offline Chemistry - Basics of Organic Chemistry Question 20 English

The correct order of their boiling point is

JEE Advanced 2014 Paper 2 Offline
9
Among the following compounds, the most acidic is
IIT-JEE 2011 Paper 1 Offline
10

In the following carbocation, H/CH$$_3$$ that is most likely to migrate to the positively charged carbon is :

IIT-JEE 2009 Paper 2 Offline Chemistry - Basics of Organic Chemistry Question 6 English

IIT-JEE 2009 Paper 2 Offline
11

The correct stability order of the following resonance structures is

IIT-JEE 2009 Paper 2 Offline Chemistry - Basics of Organic Chemistry Question 5 English

IIT-JEE 2009 Paper 2 Offline
12

The correct acidity order of the following is

IIT-JEE 2009 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 10 English

IIT-JEE 2009 Paper 1 Offline
13

The IUPAC name of the following compound is

IIT-JEE 2009 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 9 English

IIT-JEE 2009 Paper 1 Offline
14

The correct stability order for the following species is :

IIT-JEE 2008 Paper 2 Offline Chemistry - Basics of Organic Chemistry Question 2 English

IIT-JEE 2008 Paper 2 Offline
15

Hyperconjugation involves overlapping of the following orbitals:

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16
The hybridization of carbon atoms in C-C single bond of HC $$ \equiv $$ C - CH = CH2 is
IIT-JEE 1991
17
The IUPAC name of the compound
CH2 = CH $$-$$ CH(CH3)2
IIT-JEE 1987
18
The IUPAC name of the compound having the formula is : IIT-JEE 1984 Chemistry - Basics of Organic Chemistry Question 12 English
IIT-JEE 1984

Numerical

1
The maximum number of possible isomers (including stereoisomers) which may be formed on mono-bromination of 1-methylcyclohex-1-ene using Br2 and UV light is ___________.
JEE Advanced 2021 Paper 1 Online
2
Total number of isomers, considering both structural and stereoisomers of cyclic ethers with the molecular formula C4H8O is .................
JEE Advanced 2019 Paper 2 Offline
3
For the given compound $$X,$$ the total number of optically active stereoisomers is ____________.

JEE Advanced 2018 Paper 2 Offline Chemistry - Basics of Organic Chemistry Question 39 English 1

JEE Advanced 2018 Paper 2 Offline Chemistry - Basics of Organic Chemistry Question 39 English 2
JEE Advanced 2018 Paper 2 Offline
4
Among the following, the number of aromatic compound(s) is

JEE Advanced 2017 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 36 English
JEE Advanced 2017 Paper 1 Offline
5
In the following mono-bromination reaction, the number of possible chiral product(s) is (are)...

JEE Advanced 2016 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 28 English
JEE Advanced 2016 Paper 1 Offline
6

The total number of stereoisomers that can exist for M is ___________.

JEE Advanced 2015 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 21 English

JEE Advanced 2015 Paper 1 Offline
7
The total number(s) of stable conformers with non-zero dipole moment for the following compound is(are)
JEE Advanced 2014 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 23 English
JEE Advanced 2014 Paper 1 Offline
8

When the following aldohexose exists in its D-configuration, the total number of stereoisomers in its pyranose form is ____________.

IIT-JEE 2012 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 19 English

IIT-JEE 2012 Paper 1 Offline
9

The total number of contributing structure showing hyper-conjugation (involving C-H bonds) for the following carbocation is _________.

IIT-JEE 2011 Paper 2 Offline Chemistry - Basics of Organic Chemistry Question 15 English

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10
The total number of cyclic isomers possible for a hydrocarbon with the molecular formula C4H6 is
IIT-JEE 2010 Paper 1 Offline
11

The total number of cyclic structural as well as stereoisomers possible for a compound with the molecular formula C$$_5$$H$$_{10}$$ is ____________.

IIT-JEE 2009 Paper 2 Offline

MCQ (More than One Correct Answer)

1
Consider the following four compounds, I, II, III, and IV.

JEE Advanced 2020 Paper 2 Offline Chemistry - Basics of Organic Chemistry Question 31 English 1 JEE Advanced 2020 Paper 2 Offline Chemistry - Basics of Organic Chemistry Question 31 English 2

Choose the correct statement(s)
JEE Advanced 2020 Paper 2 Offline
2
With respect to the compounds I-V, choose the correct statement(s).

JEE Advanced 2020 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 33 English
JEE Advanced 2020 Paper 1 Offline
3
For the following compounds, the correct statement(s) with respect to nucleophilic substitution reaction is (are)

JEE Advanced 2017 Paper 2 Offline Chemistry - Basics of Organic Chemistry Question 35 English
JEE Advanced 2017 Paper 2 Offline
4
The correct statements(s) for the following addition reactions is (are)

JEE Advanced 2017 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 37 English
JEE Advanced 2017 Paper 1 Offline
5
The IUPAC name(s) of the following compound is (are)

JEE Advanced 2017 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 38 English
JEE Advanced 2017 Paper 1 Offline
6
The correct combination of names for isomeric alcohols with molecular formula C4H10O is/are
JEE Advanced 2014 Paper 1 Offline
7
The hyperconjugative stabilities of tert-butyl cation and 2-butene, respectively, are due to
JEE Advanced 2013 Paper 1 Offline
8

Which of the given statement(s) about N, O, P and Q with respect to M is(are) correct?

IIT-JEE 2012 Paper 2 Offline Chemistry - Basics of Organic Chemistry Question 17 English

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9

Which of the following molecules, in pure form, is(are) unstable at room temperature?

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10

Among the given options, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any) is(are)

IIT-JEE 2011 Paper 1 Offline
11

In the Newman projection for 2,2-dimethylbutane, X and Y can, respectively, be

IIT-JEE 2010 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 11 English

IIT-JEE 2010 Paper 1 Offline
12

The correct statement(s) about the compound $$\mathrm{H_3C(HO)HC-CH=CH-CH(OH)CH_3~~(X)}$$ is (are)

IIT-JEE 2009 Paper 1 Offline
13

The correct statement(s) concerning the structures E, F and G is(are) :

IIT-JEE 2008 Paper 1 Offline Chemistry - Basics of Organic Chemistry Question 4 English

IIT-JEE 2008 Paper 1 Offline

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