Hydrocarbons · Chemistry · NEET
MCQ (Single Correct Answer)
1
Given below are two statements:
Statement I: Propene on treatment with diborane gives an addition product with the formula
Statement II: Oxidation of
with hydrogen peroxide in presence of $$\mathrm{NaOH}$$ gives propan-2ol.
In the light of the above statements, choose the most appropriate answer from the options given below:
NEET 2024 (Re-Examination)
2
The alkane that can be oxidized to the corresponding alcohol by KMnO$$_4$$ as per the equation
is, when :
NEET 2024 (Re-Examination)
3
Identify product $$(\mathrm{A})$$ is the following reaction :
NEET 2023
4
The decreasing order of boiling points of the following alkanes is :
(a) heptane
(b) butane
(c) 2-methylbutane
(d) 2-methylpropane
(e) hexane
Choose the correct answer from the options given below :
NEET 2022 Phase 2
5
The products A and B in the following reaction sequence are :
NEET 2022 Phase 2
6
The incorrect method for the synthesis of alkenes is
NEET 2022 Phase 2
7
The correct structure of 2, 6-dimethyl-dec-4-ene is
NEET 2021
8
As alkene on ozonolysis gives methanal as one of the product, Its structure is :
NEET 2020 Phase 1
9
Among the following, the reaction that proceeds through an electrophilic substitution, is :
NEET 2019
10
The most suitable reagent for the following conversion, is :
NEET 2019
11
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 product. The structure of product “B” is :
NEET 2019
12
Hydrocarbon (A) reacts with bromine by
substitution to form an alkyl bromide which by
Wurtz reaction is converted to gaseous
hydrocarbon containing less than four carbon
atoms. (A) is
NEET 2018
13
Predict the correct intermediate and product in the following reaction :
$${H_3}C - C \equiv CH\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{HgS{O_4}}^{{H_2}O,{H_2}S{O_4}}} \mathop {Intermediate}\limits_{(A)} \to \mathop {\Pr oduct}\limits_{(B)} $$
$${H_3}C - C \equiv CH\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{HgS{O_4}}^{{H_2}O,{H_2}S{O_4}}} \mathop {Intermediate}\limits_{(A)} \to \mathop {\Pr oduct}\limits_{(B)} $$
NEET 2017
14
Which one is the correct order of acidity?
NEET 2017
15
With respect to the conformers of ethane, which of the following statements is true?
NEET 2017
16
The compound that will react most readily with gaseous bromine has the formula
NEET 2016 Phase 2
17
In the given reaction,
the product P is
the product P is
NEET 2016 Phase 2
18
Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only elimination reaction ?
NEET 2016 Phase 2
19
In pyrrole the electron density is maximum on
NEET 2016 Phase 2
20
Which of the following can be used as the halide component for Friedel-Crafts reaction?
NEET 2016 Phase 2
21
In which of the following molecules, all atoms are coplanar?
NEET 2016 Phase 2
22
In the reaction
X and Y are
X and Y are
NEET 2016 Phase 1
23
The pair of electrons in the given carbanion, CH3C $$ \equiv $$ C$$-$$, is present in which of the following orbitals?
NEET 2016 Phase 1
24
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
NEET 2016 Phase 1
25
For the following reactions :
(A) CH3CH2CH2Br + KOH $$ \to $$
CH3CH $$=$$ CH2 + KBr + H2O
Which of the following statements is correct?
(A) CH3CH2CH2Br + KOH $$ \to $$
CH3CH $$=$$ CH2 + KBr + H2O
Which of the following statements is correct?
NEET 2016 Phase 1
26
Which of the following is not the product of dehydration of
AIPMT 2015
27
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 alkene is
AIPMT 2015
28
2,3-Dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?
AIPMT 2015
29
A single compound of the structure,
is obtainable from ozonolysis of which of the following cyclic compounds?
is obtainable from ozonolysis of which of the following cyclic compounds?
AIPMT 2015 Cancelled Paper
30
Given :
The enthalpy of hydrogenation of these compounds will be in the order as
The enthalpy of hydrogenation of these compounds will be in the order as
AIPMT 2015 Cancelled Paper
31
What products are formed when the following compound is treated with Br2 in the presence of FeBr3?
AIPMT 2014
32
Identify Z in the sequence of reactions :
AIPMT 2014
33
Which of the following organic compounds has same hybridization as its combustion product (CO2)?
AIPMT 2014
34
In the following reaction :
Product 'P' will not give
Product 'P' will not give
NEET 2013 (Karnataka)
35
Which of the following compounds will not undergo Friedal-Craft's reaction easily?
NEET 2013
36
Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?
AIPMT 2012 Mains
37
In the following reaction
The major product is
The major product is
AIPMT 2012 Prelims
38
Among the following compounds the one that is most reactive towards electrophilic nitration is
AIPMT 2012 Prelims
39
Liquid hydrocarbons can be converted to a mixture of gaseous hydrocarbons by
AIPMT 2010 Prelims
40
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
AIPMT 2010 Prelims
41
In a set of reactions, ethylbenzene yielded a product D.
D would be
D would be
AIPMT 2010 Prelims
42
Benzene reacts with CH3Cl in the presence of anhydrons AlCl3 to form
AIPMT 2009
43
Which of the following compounds will exhibit cis-trans (geometrical) isomerism?
AIPMT 2009
44
The state of hybridisation of C2, C3, C5 and C6 of the hydrocarbon,
is in the following sequence
is in the following sequence
AIPMT 2009
45
A (predominantly) is
AIPMT 2008
46
In the hydrocarbon,
The state of hybridization of carbons 1, 3 and 5 are in the following sequence
The state of hybridization of carbons 1, 3 and 5 are in the following sequence
AIPMT 2008
47
Which of the compound with molecular formula C5H10 yields acetone on ozonolysis?
AIPMT 2007
48
Predict the product C obtained in the following reaction of 1-butyne.
AIPMT 2007
49
Which one of the following alkenes will react faster with H2 under catalytic hydrogenation conditions ?
AIPMT 2005
50
Products of the following reaction :
AIPMT 2005
51
Reaction of HBr with propene in the presence of peroxide gives
AIPMT 2004
52
Using anhydrous AlCl3 as catalyst, which one of the following reactions produces ethylbenzene (PhEt)?
AIPMT 2004
53
The correct order of reactivity towards the electrophilic substitution of the compounds aniline (I), benzene (II) and nitrobenzene (III) is
AIPMT 2003
54
Which one of the following is a free-radical substitution reaction ?
AIPMT 2003
55
The compound
on reaction with NaIO4 in the presence of KMnO4 gives
on reaction with NaIO4 in the presence of KMnO4 gives
AIPMT 2003
56
When CH3CH2CHCl2 is treated with NaNH2, the product formed is
AIPMT 2002
57
In preparation of alkene from alcohol using Al2O3 which is the effective factor ?
AIPMT 2001
58
2-Butene shows geometrical isomerism due to
AIPMT 2000
59
Which reagent converts propene to 1-propanol ?
AIPMT 2000
60
Which is maximum stable?
AIPMT 2000
61
In Friedel-Crafts reaction , toluene can be prepared by
AIPMT 2000
62
Increasing order of electrophilic substitution for following compounds
AIPMT 2000
63
Dihedral angle in staggered form of ethane is
AIPMT 2000