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Solution
Q.1 Correct
Q.1 In-correct
Q.1 Unattempt

Given below are two statements:

Statement I: Propene on treatment with diborane gives an addition product with the formula ((CH3)2 − CH)3B. .

Statement II: Oxidation of ((CH3)2 − CH)3B. with hydrogen peroxide in presence of NaOH gives propan-2ol.

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

[NEET 2024 Re]

Given below are two statements:

Statement I: Propene on treatment with diborane gives an addition product with the formula ((CH3)2 − CH)3B. .

Statement II: Oxidation of ((CH3)2 − CH)3B. with hydrogen peroxide in presence of NaOH gives propan-2ol.

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

[NEET 2024 Re]
Q.2 Correct
Q.2 In-correct
Q.2 Unattempt

The alkane that can be oxidized to the corresponding alcohol by KMnO4 as per the equation

[NEET 2024 Re]

The alkane that can be oxidized to the corresponding alcohol by KMnO4 as per the equation

[NEET 2024 Re]
Q.3 Correct
Q.3 In-correct
Q.3 Unattempt

Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in presence of calcium oxide is :

[NEET 2023]

Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in presence of calcium oxide is :

[NEET 2023]
Q.4 Correct
Q.4 In-correct
Q.4 Unattempt

Consider the following compounds/species:

The number of compounds/species which obey Huckel's rule is

[NEET 2023]

Consider the following compounds/species:

The number of compounds/species which obey Huckel's rule is

[NEET 2023]
Q.5 Correct
Q.5 In-correct
Q.5 Unattempt
Compound X on reaction with O3 followed by Zn∕H2O gives formaldehyde and 2-methyl propanal as products.
The compound X is
[NEET-2022]
Compound X on reaction with O3 followed by Zn∕H2O gives formaldehyde and 2-methyl propanal as products.
The compound X is
[NEET-2022]

©
Q.6 Correct
Q.6 In-correct
Q.6 Unattempt
Which compound amongst the following is not an aromatic compound?
[NEET-2022]
Which compound amongst the following is not an aromatic compound?
[NEET-2022]
Q.7 Correct
Q.7 In-correct
Q.7 Unattempt
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 :
[NEET Re-2022]
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 :
[NEET Re-2022]

©
Q.8 Correct
Q.8 In-correct
Q.8 Unattempt
The incorrect method for the synthesis of
alkenes is :
[NEET Re-2022]
The incorrect method for the synthesis of
alkenes is :
[NEET Re-2022]

©
Q.9 Correct
Q.9 In-correct
Q.9 Unattempt
The correct structure of 2, 6-Dimethyl-dec-4-ene is
[NEET 2021]
The correct structure of 2, 6-Dimethyl-dec-4-ene is
[NEET 2021]
Q.10 Correct
Q.10 In-correct
Q.10 Unattempt
An alkene on ozonolysis gives methanal as one of the product. Its structure is
(2020)
An alkene on ozonolysis gives methanal as one of the product. Its structure is
(2020)
Q.11 Correct
Q.11 In-correct
Q.11 Unattempt
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 R
(NEET 2019)
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 R
(NEET 2019)

©
Q.12 Correct
Q.12 In-correct
Q.12 Unattempt
The most suitable reagent for the following conversion, is

(NEET 2019)
The most suitable reagent for the following conversion, is

(NEET 2019)
Q.13 Correct
Q.13 In-correct
Q.13 Unattempt
Among the following the reaction that proceeds through an electrophilic substitution is
(NEET 2019)
Among the following the reaction that proceeds through an electrophilic substitution is
(NEET 2019)
Q.14 Correct
Q.14 In-correct
Q.14 Unattempt
The alkane that gives only one monochloro product on chlorination with Cl2 in presence of diffused sunlight is
(Odisha NEET 2019)

©
The alkane that gives only one monochloro product on chlorination with Cl2 in presence of diffused sunlight is
(Odisha NEET 2019)

©
Q.15 Correct
Q.15 In-correct
Q.15 Unattempt
In the following reaction, H3C−C≡CH
‌ red hot iron tube ‌
────────🢖
873K
A the number of sigma( σ ) bonds present in the product A, is
(Odisha NEET 2019)
In the following reaction, H3C−C≡CH
‌ red hot iron tube ‌
────────🢖
873K
A the number of sigma( σ ) bonds present in the product A, is
(Odisha NEET 2019)

©
Q.16 Correct
Q.16 In-correct
Q.16 Unattempt
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
(NEET 2018)
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
(NEET 2018)

©
Q.17 Correct
Q.17 In-correct
Q.17 Unattempt
Which one is the correct order of acidity?
(NEET 2017)

©
Which one is the correct order of acidity?
(NEET 2017)

©
Q.18 Correct
Q.18 In-correct
Q.18 Unattempt
Predict the correct intermediate and product in the following reaction :
H3C−C≡CH‌
H2O,H2SO4
────────🢖
HgSO4
Intermediate
(A)
→
Product
(B)
(NEET 2017)
Predict the correct intermediate and product in the following reaction :
H3C−C≡CH‌
H2O,H2SO4
────────🢖
HgSO4
Intermediate
(A)
→
Product
(B)
(NEET 2017)

©
Q.19 Correct
Q.19 In-correct
Q.19 Unattempt
With respect to the conformers of ethane, which of the following statements is true?
(NEET 2017)

©
With respect to the conformers of ethane, which of the following statements is true?
(NEET 2017)

©
Q.20 Correct
Q.20 In-correct
Q.20 Unattempt
Which of the following can be used as the halide component for Friedel-Crafts reaction?
(NEET- II 2016)
Which of the following can be used as the halide component for Friedel-Crafts reaction?
(NEET- II 2016)

©
Q.21 Correct
Q.21 In-correct
Q.21 Unattempt
In which of the following molecules, all atoms are coplanar?
(NEET-II 2016)
In which of the following molecules, all atoms are coplanar?
(NEET-II 2016)
Q.22 Correct
Q.22 In-correct
Q.22 Unattempt
In pyrrole the electron density is maximum on
(NEET-II 2016)

©
In pyrrole the electron density is maximum on
(NEET-II 2016)

©
Q.23 Correct
Q.23 In-correct
Q.23 Unattempt
Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only elimination reaction?
(NEET-II 2016)
Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only elimination reaction?
(NEET-II 2016)
Q.24 Correct
Q.24 In-correct
Q.24 Unattempt
In the given reaction,

the product P is
(NEET-II 2016)
In the given reaction,

the product P is
(NEET-II 2016)
Q.25 Correct
Q.25 In-correct
Q.25 Unattempt
The compound that will react most readily with gaseous bromine has the formula
(NEET-II 2016)

©
The compound that will react most readily with gaseous bromine has the formula
(NEET-II 2016)

©
Q.26 Correct
Q.26 In-correct
Q.26 Unattempt
The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is
(NEET-I 2016)
The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is
(NEET-I 2016)

©
Q.27 Correct
Q.27 In-correct
Q.27 Unattempt
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
(NEET- I 2016)

©
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
(NEET- I 2016)

©
Q.28 Correct
Q.28 In-correct
Q.28 Unattempt
The pair of electrons in the given carbanion, CH3C≡C−, is present in which of the following orbitals?
(NEET- I 2016)

©
The pair of electrons in the given carbanion, CH3C≡C−, is present in which of the following orbitals?
(NEET- I 2016)

©
Q.29 Correct
Q.29 In-correct
Q.29 Unattempt
In the reaction
H−C≡CH‌
(i)‌NaNH2/‌liq.NH3
──────────🢖
(ii)‌CH3CH2‌Br
X
(i)‌NaNH2/‌liq.NH3
────────🢖
(ii)‌CH3CH2‌Br
Y
X and Y are
(NEET-I 2016)
In the reaction
H−C≡CH‌
(i)‌NaNH2/‌liq.NH3
──────────🢖
(ii)‌CH3CH2‌Br
X
(i)‌NaNH2/‌liq.NH3
────────🢖
(ii)‌CH3CH2‌Br
Y
X and Y are
(NEET-I 2016)

©
Q.30 Correct
Q.30 In-correct
Q.30 Unattempt
2,3-Dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?
(2015)
2,3-Dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?
(2015)

©
Q.31 Correct
Q.31 In-correct
Q.31 Unattempt
In the reaction with HCl, an alkene reacts in accordance with the Markovnikov’s rule to give a product 1-chloro-lmethylcyclohexane. The possible alkene is
(2015 Cancelled)
In the reaction with HCl, an alkene reacts in accordance with the Markovnikov’s rule to give a product 1-chloro-lmethylcyclohexane. The possible alkene is
(2015 Cancelled)
Q.32 Correct
Q.32 In-correct
Q.32 Unattempt
Given :
The enthalpy of hydrogenation of these compounds will be in the order as
(2015 Cancelled)

©
Given :
The enthalpy of hydrogenation of these compounds will be in the order as
(2015 Cancelled)

©
Q.33 Correct
Q.33 In-correct
Q.33 Unattempt
A single compound of the structure,

is obtainable from ozonolysis of which of the following cyclic compounds?
(2015 Cancelled)
A single compound of the structure,

is obtainable from ozonolysis of which of the following cyclic compounds?
(2015 Cancelled)
Q.34 Correct
Q.34 In-correct
Q.34 Unattempt
Which of the following organic compounds has same hybridization as its combustion product (CO2) ?
(2014)

©
Which of the following organic compounds has same hybridization as its combustion product (CO2) ?
(2014)

©
Q.35 Correct
Q.35 In-correct
Q.35 Unattempt
Identify Z in the sequence of reactions :
CH3CH2CH=CH2
HBr/H2O2
────────🢖
Y
C2H5ONa
––──────🢖
Z
(2014)
Identify Z in the sequence of reactions :
CH3CH2CH=CH2
HBr/H2O2
────────🢖
Y
C2H5ONa
––──────🢖
Z
(2014)

©
Q.36 Correct
Q.36 In-correct
Q.36 Unattempt
What products are formed when the following compound is treated with Br2 in the presence of FeBr3 ?

(2014)
What products are formed when the following compound is treated with Br2 in the presence of FeBr3 ?

(2014)
Q.37 Correct
Q.37 In-correct
Q.37 Unattempt
Which of the following compounds will not undergo Friedal-Craft’s reaction easily
(2013 NEET)

©
Which of the following compounds will not undergo Friedal-Craft’s reaction easily
(2013 NEET)

©
Q.38 Correct
Q.38 In-correct
Q.38 Unattempt
Which of the following chemical system is non aromatic?
(Karnataka NEET 2013)
Which of the following chemical system is non aromatic?
(Karnataka NEET 2013)
Q.39 Correct
Q.39 In-correct
Q.39 Unattempt
In the following reaction :
HC≡CH
H2SO4
──────🢖
Hg2+
‌P′ Product 'P' will not give
(Karnataka NEET 2013)

©
In the following reaction :
HC≡CH
H2SO4
──────🢖
Hg2+
‌P′ Product 'P' will not give
(Karnataka NEET 2013)

©
Q.40 Correct
Q.40 In-correct
Q.40 Unattempt
Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?
(2012 Mains)

©
Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?
(2012 Mains)

©
Q.41 Correct
Q.41 In-correct
Q.41 Unattempt
In the following reaction
H3C−
CH3
|
C
|
CH3
−CH=CH2
H2O/H+
────────🢖
A
Major
product
+
B
Minor
product

The major product is
(2012)

©
In the following reaction
H3C−
CH3
|
C
|
CH3
−CH=CH2
H2O/H+
────────🢖
A
Major
product
+
B
Minor
product

The major product is
(2012)

©
Q.42 Correct
Q.42 In-correct
Q.42 Unattempt
In a set of reactions, ethylbenzene yielded a product D.

D would be
(2010)
In a set of reactions, ethylbenzene yielded a product D.

D would be
(2010)
Q.43 Correct
Q.43 In-correct
Q.43 Unattempt
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
(2010)
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
(2010)

©
Q.44 Correct
Q.44 In-correct
Q.44 Unattempt
Liquid hydrocarbons can be converted to a mixture of gaseous hydrocarbons by
(2010)

©
Liquid hydrocarbons can be converted to a mixture of gaseous hydrocarbons by
(2010)

©
Q.45 Correct
Q.45 In-correct
Q.45 Unattempt
In the following the most stable conformation of n -butane is
(2010)
In the following the most stable conformation of n -butane is
(2010)
Q.46 Correct
Q.46 In-correct
Q.46 Unattempt
Which of the following conformers for ethylene glycol is most stable?
(Mains 2010)
Which of the following conformers for ethylene glycol is most stable?
(Mains 2010)
Q.47 Correct
Q.47 In-correct
Q.47 Unattempt
Benzene reacts with CH3Cl in the presence of anhydrous AlCl3, to form
(2009)
Benzene reacts with CH3Cl in the presence of anhydrous AlCl3, to form
(2009)
Q.48 Correct
Q.48 In-correct
Q.48 Unattempt
The state of hybridisation of C2,C3,C5 and C6 of the hydrocarbon,
C
7
H3−
CH3
|
C
6
|
CH3
−
C
5
H=
C
4
H−
CH3
|
C
3
H−
C
2
≡
C
1
H
is in the following sequence
(2009)
The state of hybridisation of C2,C3,C5 and C6 of the hydrocarbon,
C
7
H3−
CH3
|
C
6
|
CH3
−
C
5
H=
C
4
H−
CH3
|
C
3
H−
C
2
≡
C
1
H
is in the following sequence
(2009)

©
Q.49 Correct
Q.49 In-correct
Q.49 Unattempt
Which of the following compounds will exhibit cis-trans (geometrical) isomerism?
(2009)
Which of the following compounds will exhibit cis-trans (geometrical) isomerism?
(2009)

©
Q.50 Correct
Q.50 In-correct
Q.50 Unattempt
In the hydrocarbon,
C
6
H3−
C
5
H=
C
4
H−
C
3
H2−
C
2
≡
C
1
H
The state of hybridization of carbons 1, 3 and 5 are in the following sequence
(2008)

©
In the hydrocarbon,
C
6
H3−
C
5
H=
C
4
H−
C
3
H2−
C
2
≡
C
1
H
The state of hybridization of carbons 1, 3 and 5 are in the following sequence
(2008)

©
Q.51 Correct
Q.51 In-correct
Q.51 Unattempt
H3C−
C
|
CH3
H−CH=CH2+HBr→A

A(predominantly) is
(2008)
H3C−
C
|
CH3
H−CH=CH2+HBr→A

A(predominantly) is
(2008)

©
Q.52 Correct
Q.52 In-correct
Q.52 Unattempt
Which of the compound with molecular formula C5H10 yields acetone on ozonolysis?
(2007)
Which of the compound with molecular formula C5H10 yields acetone on ozonolysis?
(2007)

©
Q.53 Correct
Q.53 In-correct
Q.53 Unattempt
Predict the product C obtained in the following reaction of 1-butyne.
CH3CH2−C≡CH+HCl‌‌──🢖B
HI
───🢖
C
(2007)

©
Predict the product C obtained in the following reaction of 1-butyne.
CH3CH2−C≡CH+HCl‌‌──🢖B
HI
───🢖
C
(2007)

©
Q.54 Correct
Q.54 In-correct
Q.54 Unattempt
Which one of the following alkenes will react faster with H2 under catalytic hydrogenation conditions?(R= alkyl substituent)
(2005)
Which one of the following alkenes will react faster with H2 under catalytic hydrogenation conditions?(R= alkyl substituent)
(2005)
Q.55 Correct
Q.55 In-correct
Q.55 Unattempt
Products of the following reaction:
CH3C≡CCH2CH3
(i)‌O3
───────🢖
(ii)‌hydrolysis
are
(2005)
Products of the following reaction:
CH3C≡CCH2CH3
(i)‌O3
───────🢖
(ii)‌hydrolysis
are
(2005)

©
Q.56 Correct
Q.56 In-correct
Q.56 Unattempt
Using anhydrous AlCl3 as catalyst, which one of the following reactions produces ethylbenzene (PhEt) ?
(2004)

©
Using anhydrous AlCl3 as catalyst, which one of the following reactions produces ethylbenzene (PhEt) ?
(2004)

©
Q.57 Correct
Q.57 In-correct
Q.57 Unattempt
Reaction of HBr with propene in the presence of peroxide gives
(2004)

©
Reaction of HBr with propene in the presence of peroxide gives
(2004)

©
Q.58 Correct
Q.58 In-correct
Q.58 Unattempt
The compound CH3−
CH3
|
C
=CH−CH3 on reaction with NaIO4 in the presence of KMnO4 gives
(2003)

©
The compound CH3−
CH3
|
C
=CH−CH3 on reaction with NaIO4 in the presence of KMnO4 gives
(2003)

©
Q.59 Correct
Q.59 In-correct
Q.59 Unattempt
Which one of the following is a free-radical substitution reaction?
(2003)
Which one of the following is a free-radical substitution reaction?
(2003)

©
Q.60 Correct
Q.60 In-correct
Q.60 Unattempt
The correct order of reactivity towards the electrophilic substitution of the compounds aniline (I), benzene (II) and nitrobenzene (III) is
(2003)

©
The correct order of reactivity towards the electrophilic substitution of the compounds aniline (I), benzene (II) and nitrobenzene (III) is
(2003)

©
Q.61 Correct
Q.61 In-correct
Q.61 Unattempt
When CH3CH2CHCl2 is treated with NaNH2, the product formed is
(2002)
When CH3CH2CHCl2 is treated with NaNH2, the product formed is
(2002)
Q.62 Correct
Q.62 In-correct
Q.62 Unattempt
In preparation of alkene from alcohol using Al2O3 which is the effective factor?
(2001)

©
In preparation of alkene from alcohol using Al2O3 which is the effective factor?
(2001)

©
Q.63 Correct
Q.63 In-correct
Q.63 Unattempt
The correct acidic order of the following is

(2001)
The correct acidic order of the following is

(2001)
Q.64 Correct
Q.64 In-correct
Q.64 Unattempt
Increasing order of electrophilic substitution for following compounds
(2000)

©
Increasing order of electrophilic substitution for following compounds
(2000)

©
Q.65 Correct
Q.65 In-correct
Q.65 Unattempt
In Friedel-Crafts reaction, toluene can be prepared by
(2000)
In Friedel-Crafts reaction, toluene can be prepared by
(2000)
Q.66 Correct
Q.66 In-correct
Q.66 Unattempt
Which reagent converts propene to 1 -propanol?
(2000)

©
Which reagent converts propene to 1 -propanol?
(2000)

©
Q.67 Correct
Q.67 In-correct
Q.67 Unattempt
Which is maximum stable?
(2000)
Which is maximum stable?
(2000)

©
Q.68 Correct
Q.68 In-correct
Q.68 Unattempt
2-Butene shows geometrical isomerism due to
(2000)
2-Butene shows geometrical isomerism due to
(2000)

©
Q.69 Correct
Q.69 In-correct
Q.69 Unattempt
Dihedral angle in staggered form of ethane is
(2000)
Dihedral angle in staggered form of ethane is
(2000)

©
Q.70 Correct
Q.70 In-correct
Q.70 Unattempt
When acetylene is passed through dil. H2SO4 in the presence of HgSO4, the compound formed is
(1999)
When acetylene is passed through dil. H2SO4 in the presence of HgSO4, the compound formed is
(1999)

©
Q.71 Correct
Q.71 In-correct
Q.71 Unattempt
In Friedel-Crafts alkylation, besides AlCl3 the other reactants are
(1999)
In Friedel-Crafts alkylation, besides AlCl3 the other reactants are
(1999)

©
Q.72 Correct
Q.72 In-correct
Q.72 Unattempt
Which of the following compounds will be most easily attacked by an electrophile?
(1999,1998)
Which of the following compounds will be most easily attacked by an electrophile?
(1999,1998)
Q.73 Correct
Q.73 In-correct
Q.73 Unattempt
Which one of these is not compatible with arenes?
(1998)

©
Which one of these is not compatible with arenes?
(1998)

©
Q.74 Correct
Q.74 In-correct
Q.74 Unattempt
2-Bromopentane is heated with potassium ethoxide in ethanol. The major product obtained is
(1998)

©
2-Bromopentane is heated with potassium ethoxide in ethanol. The major product obtained is
(1998)

©
Q.75 Correct
Q.75 In-correct
Q.75 Unattempt
Which of the following reaction is expected to readily give a hydrocarbon product in good yields?
(1997)

©
Which of the following reaction is expected to readily give a hydrocarbon product in good yields?
(1997)

©
Q.76 Correct
Q.76 In-correct
Q.76 Unattempt
In reaction,
CH2=CH2
Hypochlorous
──────🢖
acid
M
R
──🢖
CH2OH
|
‌
CH2OH
where, M = Molecule and R = Reagent. M and R are
(1997)
In reaction,
CH2=CH2
Hypochlorous
──────🢖
acid
M
R
──🢖
CH2OH
|
‌
CH2OH
where, M = Molecule and R = Reagent. M and R are
(1997)

©
Q.77 Correct
Q.77 In-correct
Q.77 Unattempt
The cylindrical shape of an alkyne is due to
(1997)

©
The cylindrical shape of an alkyne is due to
(1997)

©
Q.78 Correct
Q.78 In-correct
Q.78 Unattempt
In the commercial gasolines, the type of hydrocarbons which are more desirable is
(1997)

©
In the commercial gasolines, the type of hydrocarbons which are more desirable is
(1997)

©
Q.79 Correct
Q.79 In-correct
Q.79 Unattempt
Among the following compounds (I-III) the correct reaction with electrophile is

(1997)
Among the following compounds (I-III) the correct reaction with electrophile is

(1997)
Q.80 Correct
Q.80 In-correct
Q.80 Unattempt
The most stable conformation of n -butane is
(1997)
The most stable conformation of n -butane is
(1997)

©
Q.81 Correct
Q.81 In-correct
Q.81 Unattempt
Electrophile in the case of chlorination of benzene in the presence of FeCl3 is
(1996)

©
Electrophile in the case of chlorination of benzene in the presence of FeCl3 is
(1996)

©
Q.82 Correct
Q.82 In-correct
Q.82 Unattempt
The reaction,
CH2=CH−CH3+HBr⟶CH3CHBr−CH3
is
(1996)

©
The reaction,
CH2=CH−CH3+HBr⟶CH3CHBr−CH3
is
(1996)

©
Q.83 Correct
Q.83 In-correct
Q.83 Unattempt
Which of the following has zero dipole moment?
(1996)

©
Which of the following has zero dipole moment?
(1996)

©
Q.84 Correct
Q.84 In-correct
Q.84 Unattempt
The alkene R−CH=CH2 reacts readily with B2H6 and the product on oxidation with alkaline hydrogen peroxides produces
(1995)

©
The alkene R−CH=CH2 reacts readily with B2H6 and the product on oxidation with alkaline hydrogen peroxides produces
(1995)

©
Q.85 Correct
Q.85 In-correct
Q.85 Unattempt
One of the following which does not observe the anti - Markownikoff's addition of HBr, is
(1994)

©
One of the following which does not observe the anti - Markownikoff's addition of HBr, is
(1994)

©
Q.86 Correct
Q.86 In-correct
Q.86 Unattempt
The reactive species in the nitration of benzene is
(1994)

©
The reactive species in the nitration of benzene is
(1994)

©
Q.87 Correct
Q.87 In-correct
Q.87 Unattempt
R−CH2−CCl2−R
‌ Reagent ‌
─────🢖
R−C≡C−R
The reagent is
(1993)

©
R−CH2−CCl2−R
‌ Reagent ‌
─────🢖
R−C≡C−R
The reagent is
(1993)

©
Q.88 Correct
Q.88 In-correct
Q.88 Unattempt
Reduction of 2 -butyne with sodium in liquid ammonia gives predominantly
(1993)
Reduction of 2 -butyne with sodium in liquid ammonia gives predominantly
(1993)

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Q.89 Correct
Q.89 In-correct
Q.89 Unattempt
A compound is treated with NaNH2 to give sodium salt. Identify the compound.
(1993)

©
A compound is treated with NaNH2 to give sodium salt. Identify the compound.
(1993)

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Q.90 Correct
Q.90 In-correct
Q.90 Unattempt
Reactivity of hydrogen atoms attached to different carbon atoms in alkanes has the order
(1993)

©
Reactivity of hydrogen atoms attached to different carbon atoms in alkanes has the order
(1993)

©
Q.91 Correct
Q.91 In-correct
Q.91 Unattempt
Which is the correct symbol relating the two Kekule structures of benzene?
(1993)

©
Which is the correct symbol relating the two Kekule structures of benzene?
(1993)

©
Q.92 Correct
Q.92 In-correct
Q.92 Unattempt
The restricted rotation about carbon carbon double bond in 2 -butene is due to
(1993)
The restricted rotation about carbon carbon double bond in 2 -butene is due to
(1993)

©
Q.93 Correct
Q.93 In-correct
Q.93 Unattempt
Select the true statement about benzene amongst the following
(1992)

©
Select the true statement about benzene amongst the following
(1992)

©
Q.94 Correct
Q.94 In-correct
Q.94 Unattempt
Acetylenic hydrogens are acidic because
(1989)
Acetylenic hydrogens are acidic because
(1989)

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Q.95 Correct
Q.95 In-correct
Q.95 Unattempt
Which is the most suitable reagent among the following to distinguish compound ( 3 ) from rest of the compounds?
(1) CH3−C≡C−CH3
(2) CH3−CH2−CH2−CH3
(3) CH3−CH2C≡CH
(4) CH3−CH=CH2
(1989)

©
Which is the most suitable reagent among the following to distinguish compound ( 3 ) from rest of the compounds?
(1) CH3−C≡C−CH3
(2) CH3−CH2−CH2−CH3
(3) CH3−CH2C≡CH
(4) CH3−CH=CH2
(1989)

©
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