Question 1: Palette 1/70

NEET 2026 MCQ

The number of chlorine atoms present in the organic products $X$ and $Y$ of the following reactions, respectively, are :

A

3 and 3

B

6 and 3

C

6 and 6

D

3 and 6

Question 2: Palette 2/70

NEET 2026 MCQ

Given below are two statements :

Statement I : trans-But-2-ene upon treatment with $\mathrm{Br}_2$ in $\mathrm{CCl}_4$ gives the following product.

$ \text { Statement II : cis-But-2-ene upon treatment with alkaline } \mathrm{KMnO}_4 \text { gives the following product. } $

In the light of the above statements, choose the most appropriate answer from the options given below.

A

Statement I is incorrect but Statement II is correct

B

Both Statement I and Statement II are correct

C

Both Statement I and Statement II are incorrect

D

Statement I is correct but Statement II is incorrect

Question 3: Palette 3/70

NEET 2026 MCQ

Among the following, the compound having conjugated double bonds is

A

hepta-1,6-diene

B

hepta-1,3-diene

C

hepta-1,4-diene

D

hepta-1,5-diene

Question 4: Palette 4/70

NEET 2026 MCQ

Consider the following reaction sequences and choose the correct option.

A

$\mathbf{M}$ and $\mathbf{N}$ are stereoisomers

B

$\mathbf{K}$ and $\mathbf{L}$ are geometrical isomers

C

$\mathbf{K}$ and $\mathbf{L}$ are enantiomers

D

$\mathbf{M}$ and $\mathbf{N}$ are geometrical isomers

Question 5: Palette 5/70

NEET 2025 MCQ

Which one of the following reactions does NOT give benzene as the product?

A

$\mathrm{H}-\mathrm{C} \equiv \mathrm{C}-\mathrm{H} \xrightarrow[\text { at } 873 \mathrm{~K}]{\text { red hot Iron Tube }}$

B

C

D

Question 6: Palette 6/70

NEET 2025 MCQ

Which one of the following compounds does not decolourize bromine water?

A

B

C

D

Question 7: Palette 7/70

NEET 2025 MCQ

Predict the major product ' $P$ ' in the following sequence of reactions-

A

B

C

D

Question 8: Palette 8/70

NEET 2024 MCQ

Given below are two statements:

Statement I: Propene on treatment with diborane gives an addition product with the formula

Statement II: Oxidation of

with hydrogen peroxide in presence of $\mathrm{NaOH}$ gives propan-2ol.

In the light of the above statements, choose the most appropriate answer from the options given below:

A

Statement I is correct but Statement II is incorrect

B

Statement I is incorrect but Statement II is correct

C

Both Statement I and Statement II are correct

D

Both Statement I and Statement II are incorrect

Question 9: Palette 9/70

NEET 2024 MCQ

The alkane that can be oxidized to the corresponding alcohol by KMnO$_4$ as per the equation

is, when :

A

$\mathrm{R}_1=\mathrm{H} ; \mathrm{R}_2=\mathrm{H} ; \mathrm{R}_3=\mathrm{H}$

B

$\mathrm{R}_1=\mathrm{CH}_3 ; \mathrm{R}_2=\mathrm{CH}_3 ; \mathrm{R}_3=\mathrm{CH}_3$

C

$\mathrm{R}_1=\mathrm{CH}_3 ; \mathrm{R}_2=\mathrm{H} ; \mathrm{R}_3=\mathrm{H}$

D

$\mathrm{R}_1=\mathrm{CH}_3 ; \mathrm{R}_2=\mathrm{CH}_3 ; \mathrm{R}_3=\mathrm{H}$

Question 10: Palette 10/70

NEET 2023 MCQ

Identify product $(\mathrm{A})$ is the following reaction :

A

B

C

D

Question 11: Palette 11/70

NEET 2022 MCQ

The decreasing order of boiling points of the following alkanes is :

(a) heptane

(b) butane

(c) 2-methylbutane

(d) 2-methylpropane

(e) hexane

Choose the correct answer from the options given below :

A

(a) > (e) > (c) > (b) > (d)

B

(a) > (c) > (e) > (d) > (b)

C

(c) > (d) > (a) > (e) > (b)

D

(a) > (e) > (b) > (c) > (d)

Question 12: Palette 12/70

NEET 2022 MCQ

The products A and B in the following reaction sequence are :

A

B

C

D

Question 13: Palette 13/70

NEET 2022 MCQ

The incorrect method for the synthesis of alkenes is

A

Treating vicinal dihalides with Zn metal

B

Treating of alkynes with Na in liquid NH₃

C

Heating alkyl halides with alcoholic KOH

D

Treating alkyl halides in aqueous KOH solution

Question 14: Palette 14/70

NEET 2021 MCQ

The correct structure of 2, 6-dimethyl-dec-4-ene is

A

B

C

D

Question 15: Palette 15/70

NEET 2020 MCQ

As alkene on ozonolysis gives methanal as one of the product, Its structure is :

A

B

C

D

Question 16: Palette 16/70

NEET 2019 MCQ

An alkene “A” on reaction with O₃ and Zn + H₂O gives propanone and ethanal in equimolar ratio. Addition of HCl to alkene “A” gives “B” as the major product. The structure of product “B” is :

A

B

C

D

Question 17: Palette 17/70

NEET 2019 MCQ

Among the following, the reaction that proceeds through an electrophilic substitution, is :

A

B

C

D

Question 18: Palette 18/70

NEET 2019 MCQ

The most suitable reagent for the following conversion, is :

A

Zn / HCl

B

Hg²⁺ / H⁺ , H₂O

C

Na / liquid NH₃

D

H₂, Pd/C, quinoline

Question 19: Palette 19/70

NEET 2018 MCQ

Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms. (A) is

A

CH $ \equiv $ CH

B

CH₂ = CH₂

C

CH₃ - CH₃

D

CH₄

Question 20: Palette 20/70

NEET 2017 MCQ

Which one is the correct order of acidity?

A

CH$ \equiv $CH > CH₃ $-$C$ \equiv $CH
                    > CH₂ $=$ CH₂ > CH₃$-$CH₃

B

CH $ \equiv $ CH > CH₂ $=$ CH₂
                    > CH₃$-$C $ \equiv $ CH > CH₃ $-$CH₃

C

CH₃$-$CH₃ > CH₂ $=$ CH₂
                    > CH₃ $-$C $ \equiv $ CH > CH$ \equiv $CH

D

CH₂$=$CH₂ > CH₃ $-$ CH $=$ CH₂
                    > CH₃ $-$ C$ \equiv $ CH > CH $ \equiv $ CH

Question 21: Palette 21/70

NEET 2017 MCQ

Predict the correct intermediate and product in the following reaction :

${H_3}C - C \equiv CH\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{HgS{O_4}}^{{H_2}O,{H_2}S{O_4}}} \mathop {Intermediate}\limits_{(A)} \to \mathop {\Pr oduct}\limits_{(B)} $

A

B

C

D

Question 22: Palette 22/70

NEET 2017 MCQ

With respect to the conformers of ethane, which of the following statements is true?

A

Bond angle changes but bond length remains same.

B

Both bond angle and bond length change.

C

Both bond angle and bond length remain same.

D

Bond angle remains same but bond length changes.

Question 23: Palette 23/70

NEET 2016 MCQ

In pyrrole the electron density is maximum on

A

2 and 3

B

3 and 4

C

2 and 4

D

2 and 5

Question 24: Palette 24/70

NEET 2016 MCQ

Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only elimination reaction ?

A

B

C

D

Question 25: Palette 25/70

NEET 2016 MCQ

In which of the following molecules, all atoms are coplanar?

A

B

C

D

Question 26: Palette 26/70

NEET 2016 MCQ

In the given reaction,


the product P is

A

B

C

D

Question 27: Palette 27/70

NEET 2016 MCQ

Which of the following can be used as the halide component for Friedel-Crafts reaction?

A

Chlorobenzene

B

Bromobenzene

C

Chloroethene

D

Isopropyl chloride

Question 28: Palette 28/70

NEET 2016 MCQ

The compound that will react most readily with gaseous bromine has the formula

A

C₃H₆

B

C₂H₂

C

C₄H₁₀

D

C₂H₄

Question 29: Palette 29/70

NEET 2016 MCQ

For the following reactions :

(A)  CH₃CH₂CH₂Br + KOH $ \to $
                 CH₃CH $=$ CH₂ + KBr + H₂O

Which of the following statements is correct?

A

(A) is elimination, (B) and (C) are substitution reactions.

B

(A) is substitution, (B) and (C) are addition reactions.

C

(A) and (B) are elimination reactions and (C) is addition reaction.

D

(A) is elimination, (B) is substitution and (C) is addition reaction.

Question 30: Palette 30/70

NEET 2016 MCQ

The pair of electrons in the given carbanion, CH₃C $ \equiv $ C^$-$, is present in which of the following orbitals?

A

sp²

B

sp

C

2p

D

sp³

Question 31: Palette 31/70

NEET 2016 MCQ

Consider the nitration of benzene using mixed conc.H₂SO₄ and HNO₃. If a large amount of KHSO₄ is added to the mixture, the rate of nitration will be

A

unchanged

B

doubled

C

faster

D

slower

Question 32: Palette 32/70

NEET 2016 MCQ

In the reaction


X and Y are

A

X = 2-Butyne,  Y = 2-Hexyne

B

X = 1-Butyne,  Y = 2-Hexyne

C

X = 1-Butyne,  Y = 3-Hexyne

D

X = 2-Butyne,  Y = 3-Hexyne

Question 33: Palette 33/70

NEET 2015 MCQ

Which of the following is not the product of dehydration of

A

B

C

D

Question 34: Palette 34/70

NEET 2015 MCQ

In the reaction with HCl, an alkene reacts in accordance with the Markovnikov's rule to give a product 1-chloro-1 methylcyclohexane. The possible alkene is

A

B

C

(A) and (B)

D

Question 35: Palette 35/70

NEET 2015 MCQ

2,3-Dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?

A

(CH₃)₃CCH $=$ CH₂

B

(CH₃)₂C $=$ CHCH₂CH₃

C

(CH₃)₂CHCH₂CH $=$ CH₂

D

Question 36: Palette 36/70

NEET 2015 MCQ

A single compound of the structure,



is obtainable from ozonolysis of which of the following cyclic compounds?

A

B

C

D

Question 37: Palette 37/70

NEET 2015 MCQ

Given :



The enthalpy of hydrogenation of these compounds will be in the order as

A

II > III > I

B

II > I > III

C

I > II > III

D

III > II > I

Question 38: Palette 38/70

NEET 2014 MCQ

Identify Z in the sequence of reactions :

A

CH₃ $-$(CH₂)₃ $-$ O $-$ CH₂CH₃

B

(CH₃)₂CH $-$ O $-$ CH₂CH₃

C

CH₃(CH₂)₄ $-$ O $-$ CH₃

D

CH₃CH₂ $-$ CH(CH₃) $-$ O $-$ CH₂CH₃

Question 39: Palette 39/70

NEET 2014 MCQ

Which of the following organic compounds has same hybridization as its combustion product (CO₂)?

A

Ethane

B

Ethyne

C

Ethene

D

Ethanol

Question 40: Palette 40/70

NEET 2014 MCQ

What products are formed when the following compound is treated with Br₂ in the presence of FeBr₃?

A

B

C

D

Question 41: Palette 41/70

NEET 2013 MCQ

In the following reaction :

Product 'P' will not give

A

Tollen's reagent test

B

Brady's reagent test

C

Victor Meyer test

D

Iodoform test

Question 42: Palette 42/70

NEET 2013 MCQ

Which of the following compounds will not undergo Friedal-Craft's reaction easily?

A

Nitrobenzene

B

Toluene

C

Cumene

D

Xylene

Question 43: Palette 43/70

NEET 2012 MCQ

Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?

A

NaNH₂

B

HCl

C

O₂

D

Br₂

Question 44: Palette 44/70

NEET 2012 MCQ

Among the following compounds the one that is most reactive towards electrophilic nitration is

A

benzoic acid

B

nitrobenzene

C

toluene

D

benzene

Question 45: Palette 45/70

NEET 2012 MCQ

In the following reaction


The major product is

A

B

C

D

Question 46: Palette 46/70

NEET 2010 MCQ

Liquid hydrocarbons can be converted to a mixture of gaseous hydrocarbons by

A

oxidation

B

cracking

C

distillation under reduced pressure

D

hydrolysis

Question 47: Palette 47/70

NEET 2010 MCQ

The reaction of toluene with Cl₂ in presence of FeCl₃ gives X and reaction in presence of light gives Y. Thus, X and Y are

A

X = Benzal chloride, Y = o-chlorotoluene

B

X = m-chloroluene, Y = p-chlorotoluene

C

X = o- and p-chlorotoluene, Y = Trichloromethyl benzene

D

X = Benzyl chloride, Y = m-chlorotoluene

Question 48: Palette 48/70

NEET 2010 MCQ

In a set of reactions, ethylbenzene yielded a product D.

D would be

A

B

C

D

Question 49: Palette 49/70

NEET 2009 MCQ

The state of hybridisation of C₂, C₃, C₅ and C₆ of the hydrocarbon,


is in the following sequence

A

sp³, sp², sp² and sp

B

sp, sp², sp² and sp³

C

sp, sp², sp³ and sp²

D

sp, sp³, sp² and sp³

Question 50: Palette 50/70

NEET 2009 MCQ

Which of the following compounds will exhibit cis-trans (geometrical) isomerism?

A

Butanol

B

2-Butyne

C

2-Butenol

D

2-Butene

Question 51: Palette 51/70

NEET 2009 MCQ

Benzene reacts with CH₃Cl in the presence of anhydrons AlCl₃ to form

A

chlorobenzene

B

benzyl chloride

C

xylene

D

toluene.

Question 52: Palette 52/70

NEET 2008 MCQ

A (predominantly) is

A

B

C

D

Question 53: Palette 53/70

NEET 2008 MCQ

In the hydrocarbon,

The state of hybridization of carbons 1, 3 and 5 are in the following sequence

A

sp, sp², sp³

B

sp³, sp², sp

C

sp², sp, sp³

D

sp, sp³, sp²

Question 54: Palette 54/70

NEET 2007 MCQ

Which of the compound with molecular formula C₅H₁₀ yields acetone on ozonolysis?

A

3-Methyl- 1 -butene

B

Cyclopentane

C

2-Methyl-1-butene

D

2-Methyl-2-butene

Question 55: Palette 55/70

NEET 2007 MCQ

Predict the product C obtained in the following reaction of 1-butyne.

A

B

C

D

Question 56: Palette 56/70

NEET 2005 MCQ

Products of the following reaction :

A

CH₃COOH + CO₂

B

CH₃COOH + HOOC.CH₂CH₃

C

CH₃CHO + CH₃CH₂CHO

D

CH₃COOH + CH₃COCH₃

Question 57: Palette 57/70

NEET 2005 MCQ

Which one of the following alkenes will react faster with H₂ under catalytic hydrogenation conditions ?

A

B

C

D

Question 58: Palette 58/70

NEET 2004 MCQ

Reaction of HBr with propene in the presence of peroxide gives

A

isopropyl bromide

B

3-bromopropane

C

allyl bromide

D

n-propyl bromide

Question 59: Palette 59/70

NEET 2004 MCQ

Using anhydrous AlCl₃ as catalyst, which one of the following reactions produces ethylbenzene (PhEt)?

A

H₃C $-$ CH₂OH + C₆H₆

B

CH₃ $-$ CH $=$ CH₂ + C₆H₆

C

H₂C $=$ CH₂ + C₆H₆

D

H₃C $-$ CH₃ + C₆H₆

Question 60: Palette 60/70

NEET 2003 MCQ

Which one of the following is a free-radical substitution reaction ?

A

B

C

D

Question 61: Palette 61/70

NEET 2003 MCQ

The correct order of reactivity towards the electrophilic substitution of the compounds aniline (I), benzene (II) and nitrobenzene (III) is

A

III > II > I

B

II > III > I

C

I < II > III

D

I > II > III

Question 62: Palette 62/70

NEET 2003 MCQ

The compound

on reaction with NaIO₄ in the presence of KMnO₄ gives

A

CH₃COCH₃

B

CH₃COCH₃ + CH₃COOH

C

CH₃COCH₃ + CH₃CHO

D

CH₃CHO + CO₂

Question 63: Palette 63/70

NEET 2002 MCQ

When CH₃CH₂CHCl₂ is treated with NaNH₂, the product formed is

A

CH₃ $-$ CH $=$ CH₂

B

CH₃ $-$ C $ \equiv $ CH

C

D

Question 64: Palette 64/70

NEET 2001 MCQ

In preparation of alkene from alcohol using Al₂O₃ which is the effective factor ?

A

Porosity of Al₂O₃

B

Temperature

C

Concentration

D

Surface area of Al₂O₃

Question 65: Palette 65/70

NEET 2000 MCQ

Which is maximum stable?

A

1-Butene

B

cis-2-Butene

C

trans-2-Butene

D

All have same stability.

Question 66: Palette 66/70

NEET 2000 MCQ

2-Butene shows geometrical isomerism due to

A

restricted rotation about double bond

B

free rotation about double bond

C

free rotation about single bond

D

chiral carbon

Question 67: Palette 67/70

NEET 2000 MCQ

Which reagent converts propene to 1-propanol ?

A

H₂O, H₂SO₄

B

B₂H₆, H₂O₂, OH^$-$

C

Hg(OAc)₂, NaBH₄/H₂O

D

Aq. KOH

Question 68: Palette 68/70

NEET 2000 MCQ

Dihedral angle in staggered form of ethane is

A

0^o

B

12^o

C

60^o

D

180^o

Question 69: Palette 69/70

NEET 2000 MCQ

Increasing order of electrophilic substitution for following compounds

A

IV < I < II < III

B

III < II < I < IV

C

I < IV < III < II

D

II < III < I < IV

Question 70: Palette 70/70

NEET 2000 MCQ

In Friedel-Crafts reaction , toluene can be prepared by

A

C₆H₆ + CH₃Cl

B

C₆H₅Cl + CH₄

C

C₆H₆ + CH₂Cl₂

D

C₆H₆ + CH₃COCl