NEW
New Website Launch
Experience the best way to solve previous year questions with mock tests (very detailed analysis), bookmark your favourite questions, practice etc...
VISIT NOW

NEET

Some Basic Concepts of Organic Chemistry

Chemistry

Previous Years Questions

MCQ (Single Correct Answer)

More
Dihedral angle of least stable conformer of ethane is :
NEET 2021
Identify the compound that will react with Hinsberg's reagent to give a solid which dissolves in alkali.
NEET 2021
A tertiary butyl carbocation is more stable than a secondary butyl carbocation because of which of the following?
NEET 2020 Phase 1
Paper chromatography is an example of :
NEET 2020 Phase 1
Among the following, the reaction that proceeds through an electrophilic substitution, is :
NEET 2019
The compound that is most difficult to protonate is :
NEET 2019
Which of the following carbocations is expected to be most stable?
NEET 2018
Which of the following molecules represents the order of hybridisation sp2 , sp2 , sp, sp from left to right atoms?...
NEET 2018
The most suitable method of separation of 1 : 1 mixture of ortho and para-nitrophenols is
NEET 2017
The correct statement regarding electrophile is
NEET 2017
The IUPAC name of the compound ...
NEET 2017
For the following reactions : (A)  CH3CH2CH2Br + KOH $$ \to $$        &nbs...
NEET 2016 Phase 1
Which among the given molecules can exhibit tautomerism? ...
NEET 2016 Phase 2
The enolic form of ethyl accetoacetate as shown below has ...
AIPMT 2015 Cancelled Paper
Consider the following compounds : Hyperconjunction occurs in...
AIPMT 2015 Cancelled Paper
In which of the following compounds, the C$$-$$Cl bond ionisation shall give most stable carbonium ion?
AIPMT 2015 Cancelled Paper
In Duma's method for estimation of nitrogen, 0.25 g of an organic compound gave 40 mL of nitrogen collected at 300 K te...
AIPMT 2015 Cancelled Paper
Which of the following is the most correct electron displacement for a nucleophilic reaction to take place?
AIPMT 2015 Cancelled Paper
Given : Which of the given compounds can exhibit tautomerism? ...
AIPMT 2015 Cancelled Paper
The total number of $$\pi $$-bond electrons in the following structure is ...
AIPMT 2015 Cancelled Paper
Treatment of cyclopentanone with methyl lithium gives which of the following species ? ...
AIPMT 2015 Cancelled Paper
Which of the following is not the product of dehydration of ...
AIPMT 2015
Which of the following statements is not correct for a nucleophile?
AIPMT 2015
In the Kjeldahl's method for estimation of nitrogen present in a soil sample, ammonia evolved from 0.75 g of sample neut...
AIPMT 2014
Homolytic fission of the following alkanes forms free radicals CH3 $$-$$ CH3, CH3 $$-$$ CH2 $$-$$ CH3, (CH3)2CH $$-$$ CH...
NEET 2013 (Karnataka)
Nitrogen detection in an organic compound is carried out by Lassaigne's test. The blue colour formed corresponds to whic...
NEET 2013 (Karnataka)
What is the hybridisation state of benzyl carbonium ion? ...
NEET 2013 (Karnataka)
Arrange the following in increasing order of stability ...
NEET 2013 (Karnataka)
The structure of isobutyl group in an organic compound is
NEET 2013
Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating ?
NEET 2013
Structure of the compound whose IUPAC name is 3-Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid is
NEET 2013
The radical, is aromatic because it has...
NEET 2013
Which nomenclature is not according to IUPAC system?
AIPMT 2012 Prelims
The IUPAC name of the following compound is ...
AIPMT 2011 Mains
Which of the following compounds undergoes nucleophilic substitution reaction most easily?
AIPMT 2011 Mains
The Lassaigne's extract is boiled with conc. HNO3 while testing for halogens. By doing so it
AIPMT 2011 Prelims
Which one is a nucleophilic substitution reaction among the following ?
AIPMT 2011 Prelims
Which one of the following is most reactive towards electrophilic reagent?
AIPMT 2011 Prelims
The correct IUPAC name for the compound is ...
AIPMT 2011 Prelims
Considering the state of hybridization of carbon atoms, find out the molecule among the following which is linear ?
AIPMT 2011 Prelims
Which of the following species is not electrophilic in nature?
AIPMT 2010 Mains
The IUPAC name of the compound CH3CH$$=$$CHC$$ \equiv $$CH is
AIPMT 2010 Mains
Which one of the following is most reactive towards electrophilic reagent?
AIPMT 2010 Prelims
The IUPAC name of the compound having the formula CH$$ \equiv $$C$$-$$CH$$=$$CH2 is
AIPMT 2009
The stability of carbanions in the following. is in the order of...
AIPMT 2008
Which one of the following is most reactive towards electrophilic attack?
AIPMT 2008
Base strength of is in the order of...
AIPMT 2008
The order of decreasing reactivity towards an electrophilic reagent, for the following would be (i) benzene (ii) tolu...
AIPMT 2007
For (i) I$$-$$, (ii) Cl$$-$$, (iii) Br$$-$$, the increasing order of nucleophilicity would be...
AIPMT 2007
The IUPAC name of is...
AIPMT 2006
The general molecular formula, which represents the homologous series of alkanols is
AIPMT 2006
The best method for the separation of naphthalene and benzoic acid from their mixture is
AIPMT 2005
Names of some compounds are given. Which one is not in IUPAC system?
AIPMT 2005
The chirality of the compound ...
AIPMT 2005
Which amongst the following is the most stable carbocation?
AIPMT 2005
Which of the following undergoes nucleophilic substitution exclusively by SN1 mechanism?
AIPMT 2005
Which one of the following pairs represents stereoisomerism?
AIPMT 2005
The molecular formula of diphenyl methane, How many structural isomers are possible when one of the hydrogen is replace...
AIPMT 2004
The $$-$$ OH group of an alcohol or the $$-$$ COOH group of a carboxylic acid can be replaced by $$-$$ Cl using
AIPMT 2004
Which one of the following orders of acid strength is correct ?
AIPMT 2003
Name of the compound given below is ...
AIPMT 2003
IUPAC name of the following is CH2 $$=$$ CH $$-$$ CH2 $$-$$ CH2 $$-$$ C $$ \equiv $$ CH...
AIPMT 2002
Geometrical isomers differ in
AIPMT 2002
In steam distillation of toluene, the pressure of toluene in vapour is
AIPMT 2001
The incorrect IUPAC name is
AIPMT 2001
Which of the following is incorrect?
AIPMT 2001

MCQ (More than One Correct Answer)

More
Which of the following is correct with respect to – I effect of the substituents? (R = alkyl)
NEET 2018

Joint Entrance Examination

JEE Main JEE Advanced WB JEE

Graduate Aptitude Test in Engineering

GATE CSE GATE ECE GATE EE GATE ME GATE CE GATE PI GATE IN

Medical

NEET

CBSE

Class 12