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. | ||
About Hydrocarbons - JEE-ADVANCED
Hydrocarbons is a vital chapter for JEE-ADVANCED aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Hydrocarbons PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Hydrocarbons carry the most weight. Then, tackle the questions iteratively to solidify your understanding.