NEET
Chemistry
Hydrocarbons
Previous Years Questions

## MCQ (Single Correct Answer)

The decreasing order of boiling points of the following alkanes is : (a) heptane (b) 2-methylbutane (c) 2-methylpropane (d) hexane Choose the correct ...
The products A and B in the following reaction sequence are : ...
The incorrect method for the synthesis of alkenes is
The correct structure of 2, 6-dimethyl-dec-4-ene is
As alkene on ozonolysis gives methanol as one of the product, Its structure is :
The most suitable reagent for the following conversion, is : ...
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 pr...
Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing le...
Which one is the correct order of acidity?
Predict the correct intermediate and product in the following reaction : $${H_3}C - C \equiv CH\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{HgS{... With respect to the conformers of ethane, which of the following statements is true? In which of the following molecules, all atoms are coplanar? Which of the following can be used as the halide component for Friedel-Crafts reaction? In pyrrole the electron density is maximum on ... Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only elimination reaction ? In the given reaction, the product P is ... The compound that will react most readily with gaseous bromine has the formula Consider the nitration of benzene using mixed conc.H2SO4 and HNO3. If a large amount of KHSO4 is added to the mixture, the rate of nitration will be... The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is The pair of electrons in the given carbanion, CH3C$$ \equiv $$C$$-, is present in which of the following orbitals?
In the reaction X and Y are...
2,3-Dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?
In the reaction with HCl, an alkene reacts in accordance with the Markovnikov's rule to give a product 1-chloro-1 methylcyclohexane. The possible alke...
A single compound of the structure, is obtainable from ozonolysis of which of the following cyclic compounds? ...
Given : The enthalpy of hydrogenation of these compounds will be in the order as ...
What products are formed when the following compound is treated with Br2 in the presence of FeBr3? ...
Identify Z in the sequence of reactions : ...
Which of the following organic compounds has same hybridization as its combustion product (CO2)?
Which of the following chemical system is non aromatic ?
In the following reaction : Product 'P' will not give...
Which of the following compounds will not undergo Friedal-Craft's reaction easily?
Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?
Among the following compounds the one that is most reactive towards electrophilic nitration is
In the following reaction The major product is ...
Which of the following acids does not exhibit optical isomerism?
Which of the following conformers for ethylene glycol is most stable?
In the following the most stable conformation of n-butane is
Liquid hydrocarbons can be converted to a mixture of gaseous hydrocarbons by
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
In a set of reactions, ethylbenzene yielded a product D. D would be...
Benzene reacts with CH3Cl in the presence of anhydrons AlCl3 to form
Which of the following compounds will exhibit cis-trans (geometrical) isomerism?
The state of hybridisation of C2, C3, C5 and C6 of the hydrocarbon, is in the following sequence...
A (predominantly) is ...
In the hydrocarbon, The state of hybridization of carbons 1, 3 and 5 are in the following sequence...
Which of the compound with molecular formula C5H10 yields acetone on ozonolysis?
Predict the product C obtained in the following reaction of 1-butyne. ...
Products of the following reaction : ...
Which one of the following alkenes will react faster with H2 under catalytic hydrogenation conditions ?
Using anhydrous AlCl3 as catalyst, which one of the following reactions produces ethylbenzene (PhEt)?
Reaction of HBr with propene in the presence of peroxide gives
The compound on reaction with NaIO4 in the presence of KMnO4 gives ...
Which one of the following is a free-radical substitution reaction ?
The correct order of reactivity towards the electrophilic substitution of the compounds aniline (I), benzene (II) and nitrobenzene (III) is
When CH3CH2CHCl2 is treated with NaNH2, the product formed is
In preparation of alkene from alcohol using Al2O3 which is the effective factor ?
The correct acidic order of the following is ...
Which reagent converts propene to 1-propanol ?
Which is maximum stable?
In Friedel-Crafts reaction , toluene can be prepared by
Increasing order of electrophilic substitution for following compounds ...
Dihedral angle in staggered form of ethane is
2-Butene shows geometrical isomerism due to
EXAM MAP
Joint Entrance Examination
JEE MainJEE AdvancedWB JEE
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Medical
NEET