Some Basic Concepts of Organic Chemistry

Which of the following is the most correct electron displacement for a nucleophilic reaction to take place?

Given :

Which of the given compounds can exhibit tautomerism?

In which of the following compounds, the C\(-\)Cl bond ionisation shall give most stable carbonium ion?

The total number of \(\pi\)-bond electrons in the following structure is

The possible stereo-structures of CH3CHOHCOOH, which are optically active, are called

Which of the following statements is not correct for a nucleophile?

In the Kjeldahl's method for estimation of nitrogen present in a soil sample, ammonia evolved from 0.75 g of sample neutralized 10 mL of 1 M H2SO4. The percentage of nitrogen in the soil is

Which of the following chemical system is non aromatic ?

Homolytic fission of the following alkanes forms free radicals CH3 \(-\) CH3, CH3 \(-\) CH2 \(-\) CH3, (CH3)2CH \(-\) CH3, CH3 \(-\) CH2 \(-\)CH(CH3)2.
Increasing order of stability of the radicals is

Given :

I and II are

What is the hybridisation state of benzyl carbonium ion?

Arrange the following in increasing order of stability

Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating ?

The structure of isobutyl group in an organic compound is

Structure of the compound whose IUPAC name is 3-Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid is

The radical,

is aromatic because it has

Which nomenclature is not according to IUPAC system?

Which of the following acids does not exhibit optical isomerism?

Which one of the following is most reactive towards electrophilic reagent?

The correct IUPAC name for the compound is

Considering the state of hybridization of carbon atoms, find out the molecule among the following which is linear ?

The IUPAC name of the following compound is

In the following the most stable conformation of n-butane is

Which one of the following is most reactive towards electrophilic reagent?

Which of the following conformers for ethylene glycol is most stable?

The IUPAC name of the compound
CH3CH\(=\)CHC\(\equiv\)CH is

Which of the following species is not electrophilic in nature?

The IUPAC name of the compound having the formula
CH\(\equiv\)C\(-\)CH\(=\)CH2 is

Which one of the following is most reactive towards electrophilic attack?

The stability of carbanions in the following.

is in the order of

Base strength of

is in the order of

How many stereoisomers does this molecule have?
CH3CH\(=\)CHCH2CHBrCH3

For (i) I\(-\), (ii) Cl\(-\), (iii) Br\(-\), the increasing order of nucleophilicity would be

If there is no rotation of plane polarised light by a compound in a specific solvent, through to be chiral, it may mean than

The order of decreasing reactivity towards an electrophilic reagent, for the following would be
(i) benzene
(ii) toluene
(iii) chlorobenzene
(iv) phenol

The IUPAC name of

is

Which amongst the following is the most stable carbocation?

The chirality of the compound

Names of some compounds are given. Which one is not in IUPAC system?

Which one of the following pairs represents stereoisomerism?

The best method for the separation of naphthalene and benzoic acid from their mixture is

The molecular formula of diphenyl methane,

How many structural isomers are possible when one of the hydrogen is replaced by a chlorine atom ?

Which one of the following orders of acid strength is correct ?

Which of the following pairs of compounds are enantiomers?

Name of the compound given below is

IUPAC name of the following is
CH2 \(=\) CH \(-\) CH2 \(-\) CH2 \(-\) C \(\equiv\) CH

Geometrical isomers differ in

The incorrect IUPAC name is

In steam distillation of toluene, the pressure of toluene in vapour is

A compound of molecular formula C7H16 shows optical isomerism, compound will be