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JEE Main

Hydrocarbons

Chemistry

Previous Years Questions

MCQ (Single Correct Answer)

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$$ \stackrel{\bullet}{\mathrm{C}}+\mathrm{CH}_{4} \rightarrow \mathrm{A}+\mathrm{B} $$ A and B in the above atmospheric ...
JEE Main 2022 (Online) 26th July Morning Shift
In the given reaction 3-Bromo-2, 2-dimethyl butane $$\buildrel {{C_2}{H_5}OH} \over \longrightarrow \mathop {'A'}\limi...
JEE Main 2021 (Online) 20th July Morning Shift
Main products formed during a reaction of 1-methoxy naphthalene with hydroiodic acid are :
JEE Main 2021 (Online) 18th March Evening Shift
Match List - I with List - II :List - I (Chemicals)(a) Alcoholic potassium hydroxide(b) Pd/BaSO4(c) BHC (Benzene hexachl...
JEE Main 2021 (Online) 18th March Morning Shift
The major product of the following reaction is :...
JEE Main 2021 (Online) 25th February Evening Shift
Identify A in the given chemical reaction. ...
JEE Main 2021 (Online) 25th February Morning Slot
What is the major product formed by HI on reaction with ...
JEE Main 2021 (Online) 24th February Morning Slot
Match the following : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;bo...
JEE Main 2020 (Online) 6th September Evening Slot
The major product formed in the following reaction is : CH3CH = CHCH(CH3)2 $$\buildrel {HBr} \over \longrightarrow $$...
JEE Main 2020 (Online) 5th September Evening Slot
Which of the following compounds produces an optically inactive compound on hydrogenation?
JEE Main 2020 (Online) 3rd September Morning Slot
The major product in the following reaction is : ...
JEE Main 2020 (Online) 2nd September Morning Slot
In the following reaction A is : ...
JEE Main 2020 (Online) 9th January Evening Slot
Which of the following reactions will not produce a racemic product?
JEE Main 2020 (Online) 9th January Evening Slot
The major product (Y) in the following reactions is : ...
JEE Main 2020 (Online) 9th January Morning Slot
The correct order of heat of combustion for following alkadienes is : ...
JEE Main 2020 (Online) 9th January Morning Slot
Identify (A) in the following reaction sequence : ...
JEE Main 2020 (Online) 9th January Morning Slot
The major product in the following reaction is: ...
JEE Main 2020 (Online) 8th January Evening Slot
The major product [B] in the following sequence of reactions is :- ...
JEE Main 2020 (Online) 8th January Evening Slot
An unsaturated hydrocarbon X absorbs two hydrogen molecules on catalytic hydrogenation and also gives following reaction...
JEE Main 2020 (Online) 8th January Evening Slot
In the following reactions sequence, structure of A and B respectively will be : ...
JEE Main 2020 (Online) 7th January Evening Slot
Consider the following reactions : 'A' is :...
JEE Main 2019 (Online) 12th April Evening Slot
In the following skew conformation of ethane, H'–C–C–H'' dihedral angle is : ...
JEE Main 2019 (Online) 12th April Evening Slot
The major product of the following addition reaction is : H3C–CH=CH2 $$\buildrel {C{l_2}/{H_2}O} \over \longrightarrow ...
JEE Main 2019 (Online) 12th April Morning Slot
But-2-ene on reaction with alkaline KMnO4 at elevated temperature followed by acidification will give :
JEE Main 2019 (Online) 12th April Morning Slot
The major product obtained in the given reaction is : ...
JEE Main 2019 (Online) 10th April Evening Slot
The major product of the following reaction is : ...
JEE Main 2019 (Online) 10th April Morning Slot
The major product of the following reaction is : ...
JEE Main 2019 (Online) 9th April Morning Slot
Polysubstitution is a major drawback in:
JEE Main 2019 (Online) 8th April Evening Slot
Which one of the following alkenes when treated with HCl yields majorly an anti Markovnikov product?
JEE Main 2019 (Online) 8th April Evening Slot
The major product of the following reaction is – ...
JEE Main 2019 (Online) 12th January Evening Slot
The major product of the following reaction is ...
JEE Main 2019 (Online) 12th January Morning Slot
The correct order for acid strength of compounds : CH $$ \equiv $$ CH, CH3–C $$ \equiv $$ CH and CH2 = CH2 is as follows...
JEE Main 2019 (Online) 12th January Morning Slot
Which of the following compounds will produce a precipitate with AgNO3 ?
JEE Main 2019 (Online) 11th January Evening Slot
The major product of the following reaction is : ...
JEE Main 2019 (Online) 11th January Morning Slot
Which compound (s) out of the following is/are not aromatic ? ...
JEE Main 2019 (Online) 11th January Morning Slot
The major product of the following reaction is : ...
JEE Main 2019 (Online) 10th January Morning Slot
Which hydrogen in compound (E) is easily replaceable during bromination reaction in presence of light ? ...
JEE Main 2019 (Online) 10th January Morning Slot
The major product of the following reaction is : ...
JEE Main 2018 (Online) 16th April Morning Slot
When 2-butyne is treate with H2/Lindlar's catalyst, compound X is produced as the major product and when treated with N...
JEE Main 2018 (Online) 15th April Evening Slot
Biochemical Oxygen Demand (BOD) value can be a measure of water pollution caused by the organic matter. Which of the fol...
JEE Main 2018 (Online) 15th April Evening Slot
The trans-alkenes are formed by the reduction of alkynes with
JEE Main 2018 (Offline)
The major product of the following reaction is : ...
JEE Main 2017 (Online) 9th April Morning Slot
The reaction of propene with HOCl (Cl2 + H2O) proceeds through the intermediate:
JEE Main 2016 (Offline)
At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requires 375 mL air containing 20% O2 by volume for complete combusti...
JEE Main 2016 (Offline)
Which compound would give $$5$$ - keto - $$2$$ - methylhexanal upon ozonolysis?
JEE Main 2015 (Offline)
2–Hexyne gives trans–2–Hexene on treatment with :
AIEEE 2012
Which branched chain isomer of the hydrocarbon with molecular mass 72u gives only one isomer of mono substituted alkyl h...
AIEEE 2012
Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of :
AIEEE 2011
One mole of a symmetrical alkene on ozonolysis gives two moles of an aldehyde having a molecular mass of 44 u. The alken...
AIEEE 2010
The treatment of $$C{H_3}MgX\,\,$$ with $$C{H_3}C \equiv C - H$$ produces
AIEEE 2008
The hydrocarbon which can react with sodium in liquid ammonia is
AIEEE 2008
In the following sequence of reactions, the alkene affords the compound ‘B’ CH3 - CH = CH - CH3 $$\buildrel {{O_3}} \ov...
AIEEE 2008
Toluene is nitrated and the resulting product is reduced with tin and hydrochloric acid. The product so obtained is diaz...
AIEEE 2008
Which of the following reactions will yield 2, 2-dibromopropane?
AIEEE 2007
The reaction of toluene with Cl2 in presence of FeCl3 gives predominantly
AIEEE 2007
The compound formed as a result of oxidation of ethyl benzene by KMnO4 is
AIEEE 2007
Which types of isomerism is shown by 2,3-dichlorobutane?
AIEEE 2005
Acid catalyzed hydration of alkenes except ethene leads to the formation of
AIEEE 2005
Reaction of one molecule of HBr with one molecule of 1,3-butadiene at 40oC gives predominantly
AIEEE 2005
2 methylbutane on reacting with bromine in the presence of sunlight gives mainly
AIEEE 2005
Of the five isomeric hexanes, the isomer which can give two monochlorinated compounds is
AIEEE 2005
Butene-1 may be converted to butane by reaction with
AIEEE 2003
On mixing a certain alkane with chlorine and irradiating it with ultravioletlight, it forms only one monochloroalkane. T...
AIEEE 2003
Which of these will not react with acetylene ?
AIEEE 2002
What is the product when acetylene reacts with hypochlorous acid ?
AIEEE 2002

Numerical

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In the given reaction, The number of $$\pi$$ electrons present in the product 'P' is _________....
JEE Main 2022 (Online) 29th June Evening Shift
Consider the above chemical reaction. The total number of stereoisomers possible for Product 'P' is _____________....
JEE Main 2021 (Online) 25th July Evening Shift
Consider the following reactions The mass percentage of carbon in A is ______....
JEE Main 2020 (Online) 9th January Evening Slot
In the following sequence of reactions the maximum number of atoms present in molecule 'C' in one plane is _________. (...
JEE Main 2020 (Online) 8th January Evening Slot

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