Basics of Organic Chemistry · Chemistry · JEE Main
Start PracticeMCQ (Single Correct Answer)
JEE Main 2024 (Online) 9th April Evening Shift
The correct stability order of the following resonance structures of $$\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CHO}$$ is
...
JEE Main 2024 (Online) 9th April Evening Shift
Total number of stereo isomers possible for the given structure :
...
JEE Main 2024 (Online) 9th April Morning Shift
Relative stability of the contributing structures is :
...
JEE Main 2024 (Online) 9th April Morning Shift
Correct order of basic strength of Pyrrole , Pyridine and Piperidine is :...
JEE Main 2024 (Online) 9th April Morning Shift
For the given compounds, the correct order of increasing $$\mathrm{pK}_{\mathrm{a}}$$ value :
Choose the correct answer from the options given below ...
JEE Main 2024 (Online) 9th April Morning Shift
Methods used for purification of organic compounds are based on :
JEE Main 2024 (Online) 8th April Evening Shift
The correct sequence of acidic strength of the following aliphatic acids in their decreasing order is:
$$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{COOH}, \m...
JEE Main 2024 (Online) 8th April Evening Shift
IUPAC name of following hydrocarbon(X) is :
...
JEE Main 2024 (Online) 8th April Morning Shift
Which of the following are aromatic?
...
JEE Main 2024 (Online) 8th April Morning Shift
Given below are two statements :
In the light of the above statements, choose the most appropriate answer from the options given below:...
JEE Main 2024 (Online) 6th April Evening Shift
The correct arrangement for decreasing order of electrophilic substitution for above compounds is :...
JEE Main 2024 (Online) 6th April Evening Shift
The incorrect statement regarding the geometrical isomers of 2-butene is :
JEE Main 2024 (Online) 6th April Morning Shift
Functional group present in sulphonic acids is :
JEE Main 2024 (Online) 6th April Morning Shift
Which of the following is metamer of the given compound (X) ?
...
JEE Main 2024 (Online) 5th April Evening Shift
The correct nomenclature for the following compound is :
...
JEE Main 2024 (Online) 5th April Evening Shift
Match List - I with List - II.
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JEE Main 2024 (Online) 5th April Morning Shift
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Cis form of alkene is found...
JEE Main 2024 (Online) 4th April Evening Shift
Correct order of stability of carbanion is :
...
JEE Main 2024 (Online) 4th April Morning Shift
What will be the decreasing order of basic strength of the following conjugate bases? $${ }^{-} \mathrm{OH}, \mathrm{R} \overline{\mathrm{O}}, \mathrm...
JEE Main 2024 (Online) 4th April Morning Shift
Match List I with List II :
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JEE Main 2024 (Online) 4th April Morning Shift
Which among the following is incorrect statement?
JEE Main 2024 (Online) 1st February Evening Shift
The set of meta directing functional groups from the following sets is :
JEE Main 2024 (Online) 1st February Evening Shift
Lassaigne's test is used for detection of :
JEE Main 2024 (Online) 1st February Evening Shift
The functional group that shows negative resonance effect is :
JEE Main 2024 (Online) 1st February Morning Shift
Ionic reactions with organic compounds proceed through :
(A) homolytic bond cleavage
(B) heterolytic bond cleavage
(C) free radical formation
(D) prim...
JEE Main 2024 (Online) 1st February Morning Shift
Which of the following compound will most easily be attacked by an electrophile?
JEE Main 2024 (Online) 31st January Evening Shift
Identify structure of 2,3-dibromo-1-phenylpentane.
JEE Main 2024 (Online) 31st January Evening Shift
The correct order of reactivity in electrophilic substitution reaction of the following compounds is :
...
JEE Main 2024 (Online) 31st January Morning Shift
A species having carbon with sextet of electrons and can act as electrophile is called
JEE Main 2024 (Online) 31st January Morning Shift
Given below are two statements:
Statement I: IUPAC name of $$\mathrm{HO}-\mathrm{CH}_2-\left(\mathrm{CH}_2\right)_3-\mathrm{CH}_2-\mathrm{COCH}_3$$ is...
JEE Main 2024 (Online) 30th January Evening Shift
The correct stability order of carbocations is
JEE Main 2024 (Online) 30th January Evening Shift
Which among the following purification methods is based on the principle of "Solubility" in two different solvents?
JEE Main 2024 (Online) 30th January Evening Shift
IUPAC name of following compound is :
...
JEE Main 2024 (Online) 30th January Morning Shift
Which of the following molecule/species is most stable?
JEE Main 2024 (Online) 29th January Evening Shift
According to IUPAC system, the compound
is named as...
JEE Main 2024 (Online) 29th January Evening Shift
The ascending acidity order of the following H atoms is
...
JEE Main 2024 (Online) 29th January Evening Shift
Which one of the following will show geometrical isomerism?
JEE Main 2024 (Online) 29th January Morning Shift
The interaction between $$\pi$$ bond and lone pair of electrons present on an adjacent atom is responsible for
JEE Main 2024 (Online) 27th January Evening Shift
The order of relative stability of the contributing structure is :
Choose the correct answer from the options given below :...
JEE Main 2024 (Online) 27th January Evening Shift
The incorrect statement regarding conformations of ethane is :
JEE Main 2024 (Online) 27th January Evening Shift
Bond line formula of HOCH(CN)$$_2$$ is :
JEE Main 2024 (Online) 27th January Morning Shift
Which of the following is strongest Bronsted base?
JEE Main 2024 (Online) 27th January Morning Shift
Which of the following has highly acidic hydrogen?
JEE Main 2024 (Online) 27th January Morning Shift
Cyclohexene
is ________ type of an organic compound....
JEE Main 2024 (Online) 27th January Morning Shift
IUPAC name of following compound (P) is:
...
JEE Main 2023 (Online) 15th April Morning Shift
Which of the following statement is correct for paper chromatography?
JEE Main 2023 (Online) 13th April Evening Shift
Given below are two statements :
Statement I : Tropolone is an aromatic compound and has $$8 \pi$$ electrons.
Statement II : $$\pi$$ electrons of $$ >...
JEE Main 2023 (Online) 13th April Morning Shift
Among the following compounds, the one which shows highest dipole moment is
JEE Main 2023 (Online) 11th April Morning Shift
Thin layer chromatography of a mixture shows the following observation:
The correct order of elution in the silica gel column chromatography is...
JEE Main 2023 (Online) 10th April Evening Shift
The decreasing order of hydride affinity for following carbocations is:
Choose the correct answer from the options given below:...
JEE Main 2023 (Online) 10th April Morning Shift
Using column chromatography, mixture of two compounds 'A' and 'B' was separated. 'A' eluted first, this indicates 'B' has
JEE Main 2023 (Online) 8th April Evening Shift
The correct IUPAC nomenclature for the following compound is:
...
JEE Main 2023 (Online) 8th April Evening Shift
The descending order of acidity for the following carboxylic acid is-
A. $$\mathrm{CH}_{3} \mathrm{COOH}$$
B. $$\mathrm{F}_{3} \mathrm{C}-\mathrm{COOH...
JEE Main 2023 (Online) 6th April Evening Shift
From the figure of column chromatography given below, identify incorrect statements.
A. Compound 'c' is more polar than 'a' and 'b'
B. Compound '$$\m...
JEE Main 2023 (Online) 1st February Morning Shift
Resonance in carbonate ion $$\left(\mathrm{CO}_{3}{ }^{2-}\right)$$ is
Which of the following is true?...
JEE Main 2023 (Online) 31st January Morning Shift
Match items of column I and II
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JEE Main 2023 (Online) 30th January Evening Shift
Match List I with List II:
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JEE Main 2023 (Online) 25th January Morning Shift
Which of the following conformations will be the most stable?
JEE Main 2023 (Online) 25th January Morning Shift
The correct order in aqueous medium of basic strength in case of methyl substituted amines is :
JEE Main 2023 (Online) 24th January Evening Shift
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : Benzene is more stable than hypothe...
JEE Main 2023 (Online) 24th January Evening Shift
Which will undergo deprotonation most readily in the basic medium?
...
JEE Main 2022 (Online) 29th July Evening Shift
Given below are two statements.
Statement I : The compound is optically active.
Statement II : is mirror image of above compound A.
In the light of ...
JEE Main 2022 (Online) 28th July Evening Shift
Arrange the following in increasing order of reactivity towards nitration
A. p-xylene
B. bromobenzene
C. mesitylene
D. nitrobenzene
E. benzene
Choose ...
JEE Main 2022 (Online) 28th July Evening Shift
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R
Assertion A : Thin layer chromatography is an ads...
JEE Main 2022 (Online) 28th July Morning Shift
Match List - I with List - II.
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JEE Main 2022 (Online) 28th July Morning Shift
Among the following marked proton of which compound shows lowest $$\mathrm{pK}_{\mathrm{a}}$$ value?
JEE Main 2022 (Online) 27th July Evening Shift
Match List - I with List - II.
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JEE Main 2022 (Online) 27th July Morning Shift
Given below are two statements: one is labelled as Assertion A and, the other is labelled as Reason R.
Assertion A: [6] Annulene, [8] Annulene and cis...
JEE Main 2022 (Online) 26th July Evening Shift
The correct decreasing order of priority of functional groups in naming an organic Question: compound as per IUPAC system of nomenclature is
JEE Main 2022 (Online) 26th July Morning Shift
Which technique among the following, is most appropriate in separation of a mixture of $$100 \,\mathrm{mg}$$ of $$p$$-nitrophenol and picric acid ?...
JEE Main 2022 (Online) 26th July Morning Shift
Which of the following compounds is not aromatic?
JEE Main 2022 (Online) 25th July Evening Shift
Arrange the following in decreasing acidic strength.
...
JEE Main 2022 (Online) 29th June Evening Shift
Which of the following carbocations is most stable?
JEE Main 2022 (Online) 28th June Evening Shift
The correct IUPAC name of the following compound is :
...
JEE Main 2022 (Online) 28th June Morning Shift
Which one of the following techniques is not used to spot components of a mixture separated on thin layer chromatographic plate?
JEE Main 2022 (Online) 28th June Morning Shift
Which of the following structure are aromatic in nature?
...
JEE Main 2022 (Online) 27th June Evening Shift
Which of the following is most stable?
JEE Main 2022 (Online) 26th June Evening Shift
The correct order of nucleophilicity is
JEE Main 2022 (Online) 25th June Evening Shift
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : A mixture contains benzoic acid a...
JEE Main 2022 (Online) 25th June Morning Shift
Phenol on reaction with dilute nitric acid, gives two products. Which method will be most efficient for large scale separation?
JEE Main 2022 (Online) 25th June Morning Shift
In the following structures, which on is having staggered conformation with maximum dihedral angle?
JEE Main 2022 (Online) 25th June Morning Shift
The IUPAC name of ethylidene chloride is :
JEE Main 2022 (Online) 24th June Evening Shift
Arrange the following carbocations in decreasing order of stability.
...
JEE Main 2022 (Online) 24th June Morning Shift
Which of the following is an example of conjugated diketone?
JEE Main 2021 (Online) 31st August Evening Shift
Arrange the following conformational isomers of n-butane in order of their increasing potential energy :...
JEE Main 2021 (Online) 31st August Morning Shift
Choose the correct name for compound given below :...
JEE Main 2021 (Online) 31st August Morning Shift
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) :Assertion (A) : A simple distillation can b...
JEE Main 2021 (Online) 27th August Evening Shift
The compound/s which will show significant intermolecular H-bonding is/are :...
JEE Main 2021 (Online) 26th August Evening Shift
Which one of the following compounds is not aromatic?
JEE Main 2021 (Online) 26th August Evening Shift
The number of stereoisomers possible for 1, 2-dimethyl cyclopropane is :
JEE Main 2021 (Online) 27th July Evening Shift
Given below are two statements :Statement I : Hyperconjugation is a permanent effect.Statement II : Hyperconjugation in ethyl cation $$\left( {C{H_3} ...
JEE Main 2021 (Online) 27th July Morning Shift
Staggered and eclipsed conformers of ethane are :
JEE Main 2021 (Online) 27th July Morning Shift
The correct order of stability of given carbocation is :...
JEE Main 2021 (Online) 25th July Evening Shift
The correct decreasing order of densities of the following compounds is :...
JEE Main 2021 (Online) 25th July Evening Shift
Which among the following is the strongest acid ?
JEE Main 2021 (Online) 25th July Morning Shift
Which one among the following resonating structures is not correct?
JEE Main 2021 (Online) 22th July Evening Shift
Which purification technique is used for high boiling organic liquid compound (decomposes near its boiling point)?
JEE Main 2021 (Online) 22th July Evening Shift
Which of the following compounds does not exhibit resonance?
JEE Main 2021 (Online) 22th July Evening Shift
Which of the following molecules does not show stereo isomerism?
JEE Main 2021 (Online) 20th July Evening Shift
Which one of the following pairs of isomers is an example of metamerism?
JEE Main 2021 (Online) 20th July Morning Shift
Among the given species the Resonance stabilised carbocations are :...
JEE Main 2021 (Online) 18th March Evening Shift
In the following molecule,Hybridisation of Carbon a, b, and c respectively are :...
JEE Main 2021 (Online) 18th March Morning Shift
Compound with molecular formula C3H6O can show :
JEE Main 2021 (Online) 17th March Evening Shift
Nitrogen can be estimated by Kjeldahl's method for which of the following compound?
JEE Main 2021 (Online) 17th March Morning Shift
Which of the following is an aromatic compound?
JEE Main 2021 (Online) 17th March Morning Shift
Given below are two statements :Statement I : Retardation factor (Rf) can be measured in meter/centimeter.Statement II : Rf value of a compound remain...
JEE Main 2021 (Online) 16th March Morning Shift
In chromotography technique, the purification of compound is independent of :
JEE Main 2021 (Online) 16th March Morning Shift
Among the following, the aromatic compounds are :Choose the correct answer from the following options :...
JEE Main 2021 (Online) 26th February Morning Shift
Given below are two statements :Statement I : A mixture of chloroform and aniline can be separated by simple distillation.Statement II : When separati...
JEE Main 2021 (Online) 25th February Evening Shift
The correct order of acid character of the following compounds is :...
JEE Main 2021 (Online) 24th February Evening Shift
Which one of the following compounds is non-aromatic?
JEE Main 2020 (Online) 6th September Evening Slot
The IUPAC name of the following compound is :
...
JEE Main 2020 (Online) 6th September Morning Slot
Which of the following compounds shows
geometrical isomerism?
JEE Main 2020 (Online) 5th September Evening Slot
The increasing order of boiling points of the following compounds is :
...
JEE Main 2020 (Online) 4th September Morning Slot
The IUPAC name of the following compound is :
...
JEE Main 2020 (Online) 3rd September Morning Slot
Which one of the following compounds possesses the most acidic hydrogen?
JEE Main 2020 (Online) 3rd September Morning Slot
Glycerol is separated in soap industries by :
JEE Main 2020 (Online) 2nd September Morning Slot
The IUPAC name for the following compound
is
...
JEE Main 2020 (Online) 9th January Evening Slot
Which of the following has the shortest C-Cl
bond?
JEE Main 2020 (Online) 9th January Morning Slot
The increasing order of basicity for the
following intermediates is (from weak to
strong)
...
JEE Main 2020 (Online) 8th January Evening Slot
Kjeldahl's method cannot be used to estimate
nitrogen for which of the following
compounds?
JEE Main 2020 (Online) 8th January Morning Slot
A flask contains a mixture of isohexane and 3-methylpentane. One of the liquids boils at 63oC while the
other boils at 60oC What is the best way to se...
JEE Main 2020 (Online) 7th January Evening Slot
A chromatography column, packed with silica gel as stationary phase, was used to separate a
mixture of compounds consisting of (A) benzanilide (B) ani...
JEE Main 2020 (Online) 7th January Morning Slot
The increasing order to Pkb for the following compounds will be :
...
JEE Main 2019 (Online) 12th April Evening Slot
The IUPAC name for the following compound is :
...
JEE Main 2019 (Online) 12th April Morning Slot
The increasing order of the pKb of the following compound is :
...
JEE Main 2019 (Online) 10th April Evening Slot
In chromatography, which of the following statements is incorrect for Rf ?
JEE Main 2019 (Online) 10th April Evening Slot
Which of these factors does not govern the stability of a conformation in acyclic compounds?
JEE Main 2019 (Online) 10th April Evening Slot
The increasing order of nucleophilicity of the following nucleophiles is :
(a) CH3CO2$$-$$  ...
JEE Main 2019 (Online) 10th April Morning Slot
The principle of column chromatography is :
JEE Main 2019 (Online) 10th April Morning Slot
The increasing order of the reactivity of the following compounds towards electrophilic aromatic substitution reactions is :
...
JEE Main 2019 (Online) 9th April Morning Slot
The correct IUPAC name of the following
compound is :
...
JEE Main 2019 (Online) 9th April Morning Slot
The increasing order of reactivity of the
following compounds towards aromatic
electrophilic substitution reaction is :
...
JEE Main 2019 (Online) 8th April Evening Slot
Which of the following compounds will show
the maximum 'enol' content?
JEE Main 2019 (Online) 8th April Morning Slot
In the following compounds, the decreasing order of basic strength will be :
JEE Main 2019 (Online) 8th April Morning Slot
The IUPAC name of the following compound is :
...
JEE Main 2019 (Online) 12th January Morning Slot
Among the following four aromatic compounds, which one will have the lowest melting point ?
JEE Main 2019 (Online) 11th January Evening Slot
In the following compound,
the favourable site/s for protonation is/are : ...
JEE Main 2019 (Online) 11th January Morning Slot
The correct match between items I and II is :
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JEE Main 2019 (Online) 10th January Evening Slot
What is the IUPAC name of the following compound ?
...
JEE Main 2019 (Online) 10th January Morning Slot
If dichloromethane (DCM) and water (H2O) are used for differential extraction, which one of the following statements is correct ?
JEE Main 2019 (Online) 9th January Evening Slot
Which of the following compounds is not aromatic ?
JEE Main 2019 (Online) 9th January Evening Slot
The increasing basicity order of the following compounds is :
...
JEE Main 2019 (Online) 9th January Morning Slot
Which amongst the following is the strongest acid ?
JEE Main 2019 (Online) 9th January Morning Slot
The correct decreasing order for acid strength is :
JEE Main 2018 (Online) 15th April Evening Slot
Two compounds I and II are eluted by column chromatography (adsorption of I > II). Which one of following is a correct statement ?
JEE Main 2018 (Online) 15th April Evening Slot
On treatment of the following compound with a strong acid, the most susceptible site for bond cleavage is :
...
JEE Main 2018 (Online) 15th April Morning Slot
The IUPAC name of the following compound is :
...
JEE Main 2018 (Online) 15th April Morning Slot
The correct match between items of List-I and List-II is :
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JEE Main 2017 (Online) 9th April Morning Slot
Which of the following compounds is most reactive to an aqueous solution of sodium
carbonate ?
JEE Main 2017 (Online) 9th April Morning Slot
In the following structure, the double bonds are marked as I, II, III and IV
Geometrical isomerism is not possible at site (s) :
...
JEE Main 2017 (Online) 9th April Morning Slot
Which of the following compounds will show highest dipole moment ?
...
JEE Main 2017 (Online) 8th April Morning Slot
A mixture containing the following four compounds is extracted with $$1M$$ $$HCl.$$ The compound that goes to aqueous layer is :
...
JEE Main 2017 (Online) 8th April Morning Slot
Which of the following statements is not true about partition chromatography?
JEE Main 2017 (Online) 8th April Morning Slot
The IUPAC name of the following compound is :
...
JEE Main 2017 (Offline)
Which of the following molecules is least resonance stabilized?
JEE Main 2016 (Online) 9th April Morning Slot
The hydrocarbon with seven carbon atoms containing a neopentyl and a vinyl group
is :
JEE Main 2016 (Offline)
The distillation technique most suited for separating glycerol from spent-lye in the soap industry is :
JEE Main 2016 (Offline)
The absolute configuration of
is : ...
JEE Main 2015 (Offline)
In Carius method of estimation of halogens, 250 mg of an organic compound gave 141 mg of AgBr. The
percentage of bromine in the compound is: (at. Mass...
JEE Main 2015 (Offline)
Which of the following compounds will exhibit geometrical isomerism?
JEE Main 2014 (Offline)
For the estimation of nitrogen, 1.4 g of organic compound was digested by Kjeldahl method and the
evolved ammonia was absorbed in 60 mL of M/10 sulphu...
JEE Main 2013 (Offline)
The order of stability of the following carbocations :
...
AIEEE 2011
Identify the compound that exhibits tautomerism.
AIEEE 2010
Out of the following, the alkene that exhibits optical isomerism is
AIEEE 2010
The correct order of increasing basicity of the given conjugate bases (R = CH3) is
AIEEE 2009
Arrange the carbanions, $${(C{H_3})_3}\overline C $$, $$\overline C C{l_3}$$ , $${(C{H_3})_2}\overline C H$$, $${C_6}{H_5}\overline C H{}_2$$ in orde...
AIEEE 2009
The IUPAC name of neopentane is
AIEEE 2009
The alkene that exhibits geometrical isomerism is :
AIEEE 2009
The number of stereoisomers possible for a compound of the molecular formula
CH3 - CH = CH - CH(OH) - Me is :
AIEEE 2008
The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC
system of nomenclature is
AIEEE 2008
The electrophile, $${E^ \oplus }$$ attacks the benzene ring to generate the intermediate $$\sigma - $$complex. Of the following, which $$\sigma - $$...
AIEEE 2008
The absolute configuration of
...
AIEEE 2007
Presence of a nitro group in a benzene ring
AIEEE 2007
Which one of the following conformation of cyclohexane is chiral?
AIEEE 2007
...
AIEEE 2007
Which of the following molecules is expected to rotate the plane of plane - polarized light?
AIEEE 2006
CH3Br + Nu- $$\to$$ CH3 - Nu + Br- The decreasing order of the rate of the above reaction with nucleophiles (Nu–) A to D is
[Nu– = (A) PhO–, (B) AcO–,...
AIEEE 2006
The increasing order of stability of the following free radicals is
AIEEE 2006
Increasing order of stability among the three main conformations (i.e. Eclipse, Anti, Gauche) of
2-fluoroethanol is
AIEEE 2006
The $$IUPAC$$ name of the compound shown below is :
...
AIEEE 2005
Due to the presence of an unpaired electron, free radicals are:
AIEEE 2005
The decreasing order of nucleophilicity among the nucleophiles
...
AIEEE 2005
The reaction
is fastest when $$X$$ is ...
AIEEE 2004
Which one the following does not have sp2 hybridized carbon?
AIEEE 2004
Which of the following compound is not chiral?
AIEEE 2004
Consider the acidity of the carboxylic acids:
(a) PhCOOH
(b) o – NO2C6H4COOH
(c) p – NO2C6H4COOH
(d) m – NO2C6H4COOH
Which of the following order ...
AIEEE 2004
Which of the following will have meso-isomer also?
AIEEE 2004
Which of the following is the strongest base ?
AIEEE 2004
Amongst the following compounds, the optically active alkane having lowest molecular mass is
AIEEE 2004
Rate of the reaction
is fastest when $$Z$$ is ...
AIEEE 2004
The $$IUPAC$$ name of the compound is
...
AIEEE 2003
The IUPAC name of CH3COCH(CH3)2 is
AIEEE 2003
In the anion HCOO$$-$$
the two carbon-oxygen bonds are found to be of equal length. What is the reason for it?
AIEEE 2003
The general formula CnH2nO2 could be for open chain
AIEEE 2003
Among the following four structures $$i$$ to $$iv,$$
it is true that ...
AIEEE 2002
A similarity between optical and geometrical isomerism is that
AIEEE 2002
Which of the following does not show geometrical isomerism?
AIEEE 2002
Arrangement of (CH3)3C-, (CH3)2CH-, CH3-CH2- when attached to benzyl or an unsaturated group in increasing order of inductive effect is...
AIEEE 2002
Racemic mixture is formed by mixing two
AIEEE 2002
Which of the following compounds has wrong $$IUPAC$$ name ?
AIEEE 2002
Following types of compounds (as $$I, II$$ )
are studied in terms of isomerism in : ...
Numerical
JEE Main 2024 (Online) 9th April Morning Shift
How many compounds among the following compounds show inductive, mesomeric as well as hyperconjugation effects?
...
JEE Main 2024 (Online) 8th April Evening Shift
Total number of aromatic compounds among the following compounds is ______.
...
JEE Main 2024 (Online) 8th April Evening Shift
The number of optically active compounds from the following is _________.
...
JEE Main 2024 (Online) 8th April Morning Shift
The number of optical isomers in following compound is : __________.
...
JEE Main 2024 (Online) 6th April Evening Shift
Number of carbocations from the following that are not stabilized by hyperconjugation is _______.
...
JEE Main 2024 (Online) 5th April Evening Shift
Using the given figure, the ratio of $$\mathrm{R}_f$$ values of sample $$\mathrm{A}$$ and sample $$\mathrm{C}$$ is $$x \times 10^{-2}$$. Value of $$x$...
JEE Main 2024 (Online) 4th April Evening Shift
The total number of 'sigma' and 'pi' bonds in 2-oxohex-4-ynoic acid is ______.
JEE Main 2024 (Online) 4th April Morning Shift
The number of different chain isomers for C$$_7$$H$$_{16}$$ is __________.
JEE Main 2024 (Online) 1st February Evening Shift
Total number of isomeric compounds (including stereoisomers) formed by monochlorination of 2-methylbutane is _______ .
JEE Main 2024 (Online) 1st February Morning Shift
Total number of deactivating groups in aromatic electrophilic substitution reaction among the following is _______ .
...
JEE Main 2024 (Online) 1st February Morning Shift
Number of optical isomers possible for 2-chlorobutane ________.
JEE Main 2024 (Online) 31st January Evening Shift
Number of isomeric products formed by monochlorination of 2-methylbutane in presence of sunlight is ________.
JEE Main 2024 (Online) 30th January Evening Shift
Number of geometrical isomers possible for the given structure is/are _________.
...
JEE Main 2024 (Online) 27th January Evening Shift
Total number of compounds with Chiral carbon atoms from following is _________.
...
JEE Main 2024 (Online) 27th January Morning Shift
3-Methylhex-2-ene on reaction with $$\mathrm{HBr}$$ in presence of peroxide forms an addition product (A). The number of possible stereoisomers for '$...
JEE Main 2024 (Online) 27th January Morning Shift
Among the given organic compounds, the total number of aromatic compounds is
...
JEE Main 2024 (Online) 27th January Morning Shift
Among the following, total number of meta directing functional groups is (Integer based)
$$-\mathrm{OCH}_3,-\mathrm{NO}_2,-\mathrm{CN},-\mathrm{CH}_3-...
JEE Main 2023 (Online) 12th April Morning Shift
Three organic compounds A, B and $$\mathrm{C}$$ were allowed to run in thin layer chromatography using hexane and gave the following result (see figur...
JEE Main 2023 (Online) 1st February Morning Shift
The total number of chiral compound/s from the following is ______________.
...
JEE Main 2023 (Online) 29th January Morning Shift
Following chromatogram was developed by adsorption of compound 'A' on a 6 cm TLC glass plate. Retardation factor of the compound 'A' is _________ $$\t...
JEE Main 2022 (Online) 27th July Morning Shift
Optical activity of an enantiomeric mixture is $$+12.6^{\circ}$$ and the specific rotation of $$(+)$$ isomer is $$+30^{\circ}$$. The optical purity is...
JEE Main 2022 (Online) 26th July Evening Shift
Total number of isomers (including stereoisomers) obtained on monochlorination of methylcyclohexane is ___________.
JEE Main 2022 (Online) 25th July Evening Shift
The separation of two coloured substances was done by paper chromatography. The distances travelled by solvent front, substance A and substance B from...
JEE Main 2022 (Online) 25th July Evening Shift
The total number of monobromo derivatives formed by the alkanes with molecular formula C5H12 is (excluding stereo isomers) __________....
JEE Main 2022 (Online) 29th June Morning Shift
Observe structures of the following compounds
The total number of structures/compounds which possess asymmetric carbon atoms is ______________....
JEE Main 2022 (Online) 27th June Morning Shift
Total number of possible stereoisomers of dimethyl cyclopentane is ____________.
JEE Main 2022 (Online) 24th June Morning Shift
Number of electrophilic centres in the given compound is _______________.
...
JEE Main 2021 (Online) 27th July Evening Shift
The dihedral angle in staggered form of Newman projection of 1, 1, 1-Trichloro ethane is ___________ degree. (Round off to the nearest integer)
JEE Main 2021 (Online) 22th July Evening Shift
The number of acyclic structural isomers (including geometrical isomers) for pentene are ___________
JEE Main 2021 (Online) 20th July Evening Shift
When 0.15 g of an organic compound was analyzed using Carius method for estimation of bromine, 0.2397 g of AgBr was obtained. The percentage of bromin...
JEE Main 2021 (Online) 25th February Morning Shift
Using the provided information in the following paper chromatogram :Fig : Paper chromatography for compounds A and B.the calculated Rf value of A ____...
JEE Main 2020 (Online) 2nd September Morning Slot
The number of chiral carbons present in the
molecule given below is _____ .
...
MCQ (More than One Correct Answer)
JEE Main 2022 (Online) 26th July Evening Shift
Which of the following is not an example of benzenoid compound?
JEE Main 2021 (Online) 1st September Evening Shift
Which one of the following compounds is aromatic in nature?
JEE Main 2020 (Online) 5th September Evening Slot
Among the following compounds, geometrical isomerism is exhibited by :