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JEE Hydrocarbons PYQs with Solutions

29 previous year questions from Hydrocarbons (JEE Main & Advanced NSEC) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

29 questionsNSECAnswers + solutions

About Hydrocarbons PYQs

Hydrocarbons has 29 previous year questions in the Quantrex Academy JEE Main & Advanced NSEC bank. The 29 questions in this list come from Olympiad workbook (29). Each question opens on its own page with the options, the correct answer and the worked solution where available.

Hydrocarbons questions with solutions

1

The reaction of 1-phenylpropane with limited amount of chlorine in the presence of light gives mainly

Olympiad workbook Solution View → 2

The reaction of an olefin with HBr can proceed by ionic as well as radical mechanism. The reaction in the presence of light takes place by radical mechanism, as

Olympiad workbook Solution View → 3

3-Methylpentane on monochlorination gives four possible products. The reaction follows free radical mechanism. The relative reactivities for replacement of -H are 3^0: 2^0: 1^0=6

Olympiad workbook Solution View → 4

Which of the following on treatment with hot concentrated acidified KMnO_4 will give 2-methylhexane-1,6-dioic acid as the only organic product?

Olympiad workbook Solution View → 5

Spodoptol, a sex attractant, produced by a female fall armyworm moth, can be prepared as follows. The structure of Spodoptol is ( p K a : terminal alkynes ∼ 25 , alcohols ∼ 17 )

Olympiad workbook Solution View → 6

Terpinen-4-ol is an active ingredient in tea tree oil has the following structure The correct observations for terpinen-4-ol is/are I. It rotates the plane of plane polarized

Olympiad workbook Solution View → 7

Addition of bromine to cis-3-hexene gives

Olympiad workbook Solution View → 8

Compound ' X ' in the following reaction is

Olympiad workbook Solution View → 9

The sequence of reagents required for the following conversion is

Olympiad workbook Solution View → 10

The correct sequence of reagents from those listed below for the following conversion is I. NaNH_2 II. Br_2 III. H_2 / Pd-C , quinoline IV. H_3 O^ +

Olympiad workbook Solution View → 11

The reactions from those given below that involve a carbocation intermediate are

Olympiad workbook Solution View → 12

The major product ' X ' formed in the following reaction is

Olympiad workbook Solution View → 13

Which of the following is/are electrophilic aromatic substitution reaction/s?

Olympiad workbook Solution View → 14

The reaction of 2,4-hexadiene with one equivalent of bromine at 0^ ^ ^ ∘ C gives a mixture of two compounds ' X ' and ' Y '. If ' X ' is 4,5-dibromohex-2-ene, ' Y ' is

Olympiad workbook Solution View → 15

Number of products formed (ignoring stereoisomerism) in the monochlorination of ethylcyclohexane is

Olympiad workbook Solution View → 16

The major product of the following reaction is

Olympiad workbook Solution View → 17

The structure that represents the major intermediate formed in the bromination of toluene is

Olympiad workbook Solution View → 18

The product/s formed in the following reaction is/are

Olympiad workbook Solution View → 19

The correct sequence of reactions which will yield 4-nitrobenzoic acid from benzene is

Olympiad workbook Solution View → 20

The correct statement/s among the following is/are

Olympiad workbook Solution View → 21

Two isomeric hydrocarbons ' X ' and ' Y ' (C_4 H_6) , give the same product (C_4 H_8 O) on catalytic hydration with dilute acid. However, they form different products but with

Olympiad workbook Solution View → 22

In a pair of isomers of molecular formula C_5 H_8 , both the compounds undergo catalytic hydrogenation to form compounds of molecular formula C_5 H_ 10 . On ozonolysis followed by

Olympiad workbook Solution View → 23

A chiral hydrocarbon (Molecular Formula C_6 H_ 12 ) undergoes catalytic hydrogenation to yield an achiral product (Molecular Formula C_6 H_ 14 ). The chiral hydrocarbon is

Olympiad workbook Solution View → 24

The correct order of the given reagents to convert benzene to m-Chlorobromobenzene is (1) sulfuric acid (conc.) and heat (2) Cl_2+FeCl_3 and heat (3) NaNO_2+H_3 O^ + 0^ ^ ^ ∘ C

Olympiad workbook Solution View → 25

The product/s obtained on reaction of biphenyl ( Ph-Ph ) with nitrating mixture ( HNO_3+H_2 SO_4 ) is/are:

Olympiad workbook Solution View → 26

An alkane [X] contains five 1^ ^ ^ ∘ , two 2^ ^ ^ ∘ , one 3^ ^ ^ ∘ and one 4^ ^ ^ ∘ carbon atoms. The IUPAC name of [X] is:

Olympiad workbook Solution View → 27

Predict the major product in the following reaction. PCC is pyridinium chlorochromate

Olympiad workbook Solution View → 28

At 0^ ^ ^ ∘ C, 1 equivalent bromine is added to 2,4 -hexadiene to produce 4,5 -dibromo- 2 -hexene and its isomer ' X '. ' X ' is:

Olympiad workbook Solution View → 29

Chlorination of propane gives four dichloro products. One of them is optically active. The number of trichloro products possible from the optically active dichloro product is

Olympiad workbook Solution View →
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Main Hydrocarbons list

The larger JEE Hydrocarbons list is under Chemistry (509 questions).

Related JEE NSEC chapters

Some Basic Concepts of Chemistry (60)Electrochemistry (52)Thermodynamics (C) (50)Structure of Atom (50)General Organic Chemistry (44)Chemical Kinetics (42)Chemical Bonding and Molecular Structure (34)Coordination Compounds (33)Solid State (22)Ionic Equilibrium (20)Alcohols Phenols and Ethers (19)Solutions (18)

Hydrocarbons in other exams

NEET Hydrocarbons (757)BITSAT Hydrocarbons (20)