JEE-ADVANCED SERIES Chemistry
Hydrocarbons
27 previous year questions.
Volume: 27 Ques
Yield: High
High-Yield Trend
3
2022 2
2021 2
2020 1
2017 1
2014 1
2012 1
2011 2
2010 1
2009 2
2006 2
2004 1
1998 1
1997 1
1993 1
1985 Chapter Questions 27 MCQs
01
PYQ 1980
medium
chemistry ID: jee-adva
Which of the following will decolourise alkaline solution?
1
2
3
4
02
PYQ 1982
medium
chemistry ID: jee-adva
The compound with highest boiling point is
1
2 -methyl butane
2
n -pentane
3
2 . 2 -dimethyl propane
4
n-hexane
03
PYQ 1983
medium
chemistry ID: jee-adva
Which of the following compounds does not dissolve in cone. even on warming?
1
Ethylene
2
Benzene
3
Hexane
4
Aniline
04
PYQ 1983
medium
chemistry ID: jee-adva
When propyne is treated with aqueous , in the presence of , the product formed is
1
acetone
2
ether
3
aldehyde
4
propanal
05
PYQ 1984
medium
chemistry ID: jee-adva
Baeyer's reagent is
1
alkaline permanganate solution
2
acidified pennanganate solution
3
neutral permanganate solution
4
aqueous bromine solution
06
PYQ 1985
medium
chemistry ID: jee-adva
Acidic hydrogen is present in
1
ethyne
2
ethene
3
benzene
4
ethane
07
PYQ 1993
medium
chemistry ID: jee-adva
Which one of the following has the smallest heat of hydrogenation per mole ?
1
1-butene
2
trans-2-butene
3
cis-2-butene
4
1,3-butadiene
08
PYQ 1997
medium
chemistry ID: jee-adva
When cyclohexane is poured on water, it floats because
1
cyclohexane is in -boat- form
2
cyclohexane is in -chair- form
3
cyclohexane is in -crown- form
4
cyclohexane is less dense than water
09
PYQ 1998
medium
chemistry ID: jee-adva
Benzyl chloride can be prepared from toluene by chlorination with
1
2
3
4
NaOCl
10
PYQ 2004
medium
chemistry ID: jee-adva
2-Hexyne gives trans-2-hexene on treatment with
1
2
3
4
11
PYQ 2004
easy
chemistry ID: jee-adva
2-phenyl propene on acidic hydration, gives
1
2-phenyl-2-propanol
2
2-phenyl-1-propanol
3
3-phenyl-1-propanol
4
1-phenyl-2-propanol
12
PYQ 2006
medium
chemistry ID: jee-adva
Identify the adduct.
1
2
3
4
13
PYQ 2006
medium
chemistry ID: jee-adva
What are N and M?
1
6,6
2
6,4
3
4,4
4
3,3
14
PYQ 2009
medium
chemistry ID: jee-adva
The correct statement(s) about the compound is/are
1
The total number of stereoisomers possible for is
2
The total number of diastereomers possible for is
3
If the stereochemistry about the double bond in is trans, the number of enantiomers possible for is
4
If the stereochemistry about the double bond in is cis, the number of enantiomers possible for is
15
PYQ 2010
medium
chemistry ID: jee-adva
In the Newman projection for -dimethylbutane and can respectively be
1
and
2
and
3
4
16
PYQ 2010
medium
chemistry ID: jee-adva
The synthesis of -octyne is achieved by adding a bromoalkane into a mixture of sodium amide and an alkyne. The bromoalkane and alkyne respectively are
1
and
2
and
3
and
4
and
17
PYQ 2011
medium
chemistry ID: jee-adva
Amongst the given options, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any), is/are
1
2
3
4
18
PYQ 2012
medium
chemistry ID: jee-adva
The number of optically active products obtained from the complete ozonolysis of the given compound, is
1
0
2
1
3
2
4
4
19
PYQ 2014
medium
chemistry ID: jee-adva
Isomers of hexane, based on their branching, can be divided into three distinct classes as shown in the figure. The correct order of their boiling point is
1
I > II > III
2
III > II > I
3
II > III > I
4
III > I > II
20
PYQ 2017
medium
chemistry ID: jee-adva
The correct statement(s) for the following addition reactions is(are)
1
and are identical molecules.
2
( and ) and ( and ) are two pairs diastereomers
3
( and ) and ( and ) are two pairs of enantiomers.
4
Bromination proceeds through trans-addition in both the reactions
21
PYQ 2020
medium
chemistry ID: jee-adva
Which of the following plots is (are) correct for the given reaction? ([P] is the initial concentration of )
1
2
3
4
22
PYQ 2020
medium
chemistry ID: jee-adva
The Fischer projection of D-erythrose is shown below.
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.
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.
| Column-I | Column-II | ||
|---|---|---|---|
| P |  | i | Diastereomer |
| Q |  | ii | Identical |
| R |  | iii | Enantiomer |
| S |  | ||
1
P→2, Q→3, R→2, S→2
2
P→3, Q→1, R→1, S→2
3
P→2, Q→1, R→1, S→3
4
P→2, Q→3, R→3, S→1
23
PYQ 2021
easy
chemistry ID: jee-adva
The reaction of x g of Sn with HCl quantitatively produced a salt. The entire amount of the salt reacted with y g of nitrobenzene in the presence of the required amount of HCl to produce 1.29 g of an organic salt (quantitatively).
(Use Molar masses (in g mol–1) of H, C, N, O, Cl and Sn as 1, 12, 14, 16, 35 and 119, respectively).
24
PYQ 2021
medium
chemistry ID: jee-adva
The reaction sequence(s) that would lead to o-xylene as the major product is(are).
1
2
3
4
25
PYQ 2022
easy
chemistry ID: jee-adva
The number of isomeric tetraenes (NOT containing -hybridized carbon atoms) that can be formed from the following reaction sequence is ______.
26
PYQ 2022
medium
chemistry ID: jee-adva
The number of - (methylene) groups in the product formed from the following reaction sequence is_____
27
PYQ 2022
easy
chemistry ID: jee-adva
Match the compounds in LIST-I with the observations in LIST-II, and choose the correct option.
LIST-I | LIST-II | ||
|---|---|---|---|
| I | Aniline | P | Sodium fusion extract of the compound on boiling with FeSO4, followed by acidification with conc. H2SO4, gives Prussian blue color. |
| II | o-Cresol | Q | Sodium fusion extract of the compound on treatment with sodium nitroprusside gives blood red color. |
| III | Cysteine | R | Addition of the compound to a saturated solution of NaHCO3 results in effervescence. |
| IV | Coprolactam | S | The compound reacts with bromine water to give a white precipitate |
| T | Treating the compound with neutral FeCl3 solution produces violet color. | ||