iCON Education HYD, 79930 92826, 73309 7282608 May 2026
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
Correct Answer: C
Explanation:
2026
Q2
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282628 Jun 2026
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
Correct Answer: A
Explanation:
$ \text { Therefore, statement-I is incorrect. } $
2026
Q3
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282628 Jun 2026
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
Correct Answer: B
Explanation:
An organic compound (diene) with two double bonds separated by one single bond is termed as conjugated diene.
2026
Q4
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282628 Jun 2026
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
Correct Answer: B
Explanation:
2025
Q5
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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.
Correct Answer: B
Explanation:
2025
Q6
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
Which one of the following compounds does not decolourize bromine water?
A.
B.
C.
D.
Correct Answer: C
Explanation:
Test for unsaturation i.e. Bromine water Reddish orange colour of bromine solution in $\mathrm{CCl}_4$ will discharge when bromine adds to an unsaturation site.
2025
Q7
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
Predict the major product ' $P$ ' in the following sequence of reactions-
A.
B.
C.
D.
Correct Answer: C
Explanation:
2024
Q8
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
The products A and B in the following reaction sequence are :
A.
B.
C.
D.
Correct Answer: C
Explanation:
2022
Q13
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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
Correct Answer: D
Explanation:
Alkenes can be prepared
2021
Q14
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
The correct structure of 2, 6-dimethyl-dec-4-ene is
A.
B.
C.
D.
Correct Answer: A
Explanation:
The structure can be identified with the help of branches at 2 and 6 positions and a double bond at 4 position.
2020
Q15
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
As alkene on ozonolysis gives methanal as one of the product, Its structure is :
A.
B.
C.
D.
Correct Answer: B
Explanation:
2019
Q16
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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.
Correct Answer: A
Explanation:
2019
Q17
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
Among the following, the reaction that proceeds through an electrophilic substitution, is :
A.
B.
C.
D.
Correct Answer: D
Explanation:
2019
Q18
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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
Correct Answer: D
Explanation:
2018
Q19
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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
Correct Answer: D
Explanation:
2017
Q20
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
Greater the character of C-atom in hydrocarbons,
greater the electronegativity of that carbon and
thus greater the acidic nature of the H attached to
electronegative carbon.
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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.
Correct Answer: C
Explanation:
Conformers are the isomers which are formed
by rotation about single bonds without any cleavage
of any bond. These conformers have same bond
angle between them and have same bond length
while their dihedral angle changes.
2016
Q23
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
In pyrrole the electron density is maximum on
A.
2 and 3
B.
3 and 4
C.
2 and 4
D.
2 and 5
Correct Answer: D
Explanation:
Pyrrole has maximum electron density on
2 and 5. It generally reacts with electrophiles at the
C-2 or C-5 due to the highest degree of stability of
the protonated intermediate.
Attack at position 3 or 4 yields a carbocation that is
a hybrid of structures (I) and (II). Attack at position
2 or 5 yields a carbocation that is a hybrid not only
of structures (III) and (IV) (analogous to I and II) but
also of structure (V). The extra stabilization conferred
by (V) makes this ion the more stable one.
Also, attack at position 2 or 5 is faster because the
developing positive charge is accommodated by
three atoms of the ring instead of by only two.
2016
Q24
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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.
Correct Answer: C
Explanation:
2016
Q25
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
In which of the following molecules, all atoms are coplanar?
A.
B.
C.
D.
Correct Answer: A
Explanation:
Biphenyl is coplanar as all carbon atoms are sp2
hybridised.
2016
Q26
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
In the given reaction,
the product P is
A.
B.
C.
D.
Correct Answer: C
Explanation:
2016
Q27
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
Which of the following can be used as the halide component for Friedel-Crafts reaction?
A.
Chlorobenzene
B.
Bromobenzene
C.
Chloroethene
D.
Isopropyl chloride
Correct Answer: D
Explanation:
Friedel–Crafts reaction :
Chlorobenzene, bromobenzene and chloroethene
are not suitable halide components as lone pair of
electrons of halogen are delocalized with $\pi $-bonds
to attain double bond (C = X) character.
2016
Q28
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
The compound that will react most readily with gaseous bromine has the formula
A.
C3H6
B.
C2H2
C.
C4H10
D.
C2H4
Correct Answer: A
Explanation:
Propene is most reactive towards Br2 (gaseous) than CH2 = CH2, HC $ \equiv $ CH and butane due to most electron
density.
2016
Q29
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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.
Correct Answer: D
Explanation:
(A) Saturated compound is converted into unsaturated
compound by removal of group of atoms hence, it
is an elimination reaction.
(B) —Br group is replaced by —OH group hence, it is a
substitution reaction.
(C) Addition of Br2 converts an unsaturated compound
into a saturated compound hence, it is an addition
reaction.
2016
Q30
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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
Correct Answer: B
Explanation:
Thus, pair of electrons is present in sp-hybridised orbital.
2016
Q31
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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
Due to common ion effect backward reaction will take place so the formation $NO_2^ + $
decrease so nitration
process will become slower.
2016
Q32
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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
Correct Answer: C
Explanation:
2015
Q33
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
Which of the following is not the product of dehydration of
A.
B.
C.
D.
Correct Answer: A
Explanation:
2015
Q34
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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.
Correct Answer: C
Explanation:
2015
Q35
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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.
Correct Answer: A
Explanation:
2015
Q36
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
A single compound of the structure,
is obtainable from ozonolysis of which of the following cyclic compounds?
A.
B.
C.
D.
Correct Answer: C
Explanation:
2015
Q37
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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
Correct Answer: D
Explanation:
Enthalpy of hydrogenation is inversely proportional to the stability of alkenes.
Stability of alkenes : I $>$ II $>$ III
Enthalpy of hydrogenation : I $<$ II $<$ II
2014
Q38
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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
Correct Answer: A
Explanation:
2014
Q39
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
Which of the following organic compounds has same hybridization as its combustion product (CO2)?
A.
Ethane
B.
Ethyne
C.
Ethene
D.
Ethanol
Correct Answer: B
Explanation:
The combustion reaction of ethylene is
C2O2 + ${5 \over 2}$O2 $ \to $ 2CO2 + H2O
Both ethyne and CO2 have sp-hybridisation.
2014
Q40
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
What products are formed when the following compound is treated with Br2 in the presence of FeBr3?
A.
B.
C.
D.
Correct Answer: C
Explanation:
Methyl group is ortho para directing but due to steric hindrance effect, generated by two -CH3 groups substitution will not take place on position (I). Hence only two products are possible.
2013
Q41
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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
Correct Answer: C
Explanation:
CH3CHO does not give Victor Meyer test.
2013
Q42
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
Which of the following compounds will not undergo Friedal-Craft's reaction easily?
A.
Nitrobenzene
B.
Toluene
C.
Cumene
D.
Xylene
Correct Answer: A
Explanation:
Nitrobenzene is strongly deactivated, hence will not undergo Friedel-Crafts reaction.
2012
Q43
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?
A.
NaNH2
B.
HCl
C.
O2
D.
Br2
Correct Answer: A
Explanation:
2012
Q44
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
Among the following compounds the one that is most reactive towards electrophilic nitration is
A.
benzoic acid
B.
nitrobenzene
C.
toluene
D.
benzene
Correct Answer: C
Explanation:
Due to electron releasing group like —R,
—OH etc. increases the electron density at ortho
and para position and thus makes the benzene
ring more reactive towards electrophile. On the
other hand, electron withdrawing groups like —
COOH, —NO2 etc. reduces electron density and
thus reduces the reactivity of benzene towards
electrophile. Thus, the order is
2012
Q45
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
In the following reaction
The major product is
A.
B.
C.
D.
Correct Answer: A
Explanation:
2010
Q46
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
Liquid hydrocarbons can be converted to a mixture of gaseous hydrocarbons by
A.
oxidation
B.
cracking
C.
distillation under reduced pressure
D.
hydrolysis
Correct Answer: B
Explanation:
On cracking or pyrolysis, the hydrocarbon with higher molecular mass gives a mixture of hydrocarbons having lower molecular masses. Hence, liquid hydrocarbons can be converted into a mixture of gaseous hydrocarbons. (Lower hydrocarbons exist in gaseous state while higher ones are in liquid state or solid state.)
2010
Q47
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
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
Correct Answer: C
Explanation:
2010
Q48
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
In a set of reactions, ethylbenzene yielded a product D.
D would be
A.
B.
C.
D.
Correct Answer: D
Explanation:
2009
Q49
NEET
MCQ
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
The state of hybridisation of C2, C3, C5 and C6 of the hydrocarbon,
iCON Education HYD, 79930 92826, 73309 7282610 Mar 2026
Which of the following compounds will exhibit cis-trans (geometrical) isomerism?
A.
Butanol
B.
2-Butyne
C.
2-Butenol
D.
2-Butene
Correct Answer: D
Explanation:
Alkenes with double bonds cannot undergo free rotation and can have different geometrical shapes with two different groups on each end of the double bond.
