Recent questions tagged basic-organic-chemistry

In the following carbocation, $H/CH_3$ that most likely to migrate to the positively charged carbon is .

asked Feb 24, 2014 by meena.p

1 answer

Which of the following resonating structures of $1-methoxy -1, 3- butadiene$ is least stable?

asked Feb 24, 2014 by meena.p

1 answer

Arrange the following compounds in order of increasing dipole moment:- Toluene (I) ; m-dichorobenzene (II) ;o-dichlorobenzene (III) ; p- dichlorobenzene.(IV)

asked Feb 24, 2014 by meena.p

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The number of isomers for the compound with molecular $C_2BrClFI$ is :

asked Feb 24, 2014 by meena.p

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Which of the following have asymmetric carbon atom ?

asked Feb 22, 2014 by meena.p

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The order of reactivitiesof the following alkyl halides for a $Sn^2$ reaction is

asked Feb 22, 2014 by meena.p

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The compound which is not isomeric with diethyl ether is

asked Feb 22, 2014 by meena.p

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Which of the following compounds will exhibit cis-trans (geometrical ) isomerism ?

asked Feb 22, 2014 by meena.p

1 answer

Out of the following compounds , which will be have a zero dipole moment.

asked Feb 22, 2014 by meena.p

1 answer

Identify the correct order of reactivity in electrophilic substitution action of the following compounds.

asked Feb 22, 2014 by meena.p

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The bond between carbon atom (1) and carbon atom (2) in compound $N \equiv C_{(1)} -CH_{(2)}H \equiv CH_2$ involves the hybrid as

asked Feb 22, 2014 by meena.p

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The $Cl-C-Cl$ angle in $1,1,2,2$- tetracholoroethene and tetrachloromethane respectively will be about

asked Feb 22, 2014 by meena.p

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The correct stability order of te following resonance structures is $ I:H_2C= N^+=\bar{N} ; \quad II:H_2C^+ - N=\bar{N} \quad ; III:H_2C - N^+=\bar{N} \quad ; IV:H_2 \bar{C}- N=N^+$

asked Feb 22, 2014 by meena.p

1 answer

What is the decreasing order of strength of the bases $OH^-,NH_2^-,H-C \equiv C^- $ and $CH_3 ^{-}CH_2^-$?

asked Feb 22, 2014 by meena.p

1 answer

An $SN^2$ reaction at an asymmetric carbon a compound always gives,

asked Feb 22, 2014 by meena.p

1 answer

In the following groups : $I\; - OAc ; \;\; II \; -OMe ; \; III \;-OSO_2 Me\; ; (IV) \; -OSO_2 CF_3$ the order of leaving groups ability is

asked Feb 21, 2014 by meena.p

1 answer

Allyl isocynide has

asked Feb 21, 2014 by meena.p

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Which of the following hydrocarbons has the lowest dipole moment?

asked Feb 21, 2014 by meena.p

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The products of combustion of an aliphatic thiol (RSH) at 298 k are

asked Feb 21, 2014 by meena.p

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The hybridisation of carbon atoms in $C-C$ single bond of $HC \equiv C-CH = CH_2$ is

asked Feb 21, 2014 by meena.p

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The number of sigma and pi-bonds in 1-butene -3-yne are

asked Feb 21, 2014 by meena.p

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The optically active tartaric acid named as $D-(+)-$ tartaric acid because it has a positive,

asked Feb 21, 2014 by meena.p

1 answer

Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is

asked Feb 21, 2014 by meena.p

1 answer

The structure shows:

asked Feb 21, 2014 by meena.p

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The IUPAC name of $C_6H_5COCl$ is

asked Feb 21, 2014 by meena.p

1 answer

The IUPAC name of the following compound

asked Feb 21, 2014 by meena.p

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Statement - 1: Phenol is more reactive than benzene towards elecrophilic substitution reaction . Statement - 2: In the case of phenol, the intermediate carbocation is more resonance stabilized.

asked Feb 21, 2014 by meena.p

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Statement 1: Molecules that are not super imposable on their mirror images are chiral. Statement -2 : All chiral molecules have chiral centres.

asked Feb 21, 2014 by meena.p

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Statement - 1: Aryl halides undergo nucleophilic substitution with ease. Statement - 2: The carbon - halogen bond in aryl halides has partial double bond character.

asked Feb 21, 2014 by meena.p

1 answer

Most stable carbonium ion is

asked Feb 21, 2014 by meena.p

3 answers

Among the following compounds, the strongest acid is

asked Feb 21, 2014 by meena.p

1 answer

Which of the following acids has the smallest dissociation constant

asked Feb 21, 2014 by meena.p

1 answer

The number of stereoisomers obtained by bromiantion of trans-2-butene is

asked Feb 21, 2014 by meena.p

1 answer

Hyper conjugation involves overlap of the following orbitals

asked Feb 21, 2014 by meena.p

1 answer

Isomers which are mirror images are known as __

asked Feb 21, 2014 by meena.p

1 answer

An aromatic molecule will

asked Feb 21, 2014 by meena.p

1 answer

Identify the correct order of boiling points of the following compounds : $CH_3 CH_2 CH_2OH,CH_3CH_{\large 2_2}CH_2CHO , CH_3CH_{\large 2_3}CH_2COOH$

asked Feb 21, 2014 by meena.p

2 answers

Molecule in which the distance between the two adjacent carbon atoms is large is

asked Feb 20, 2014 by meena.p

1 answer

The IUPAC name of the compounds having the formula

asked Feb 20, 2014 by meena.p

1 answer

Which of the following compound will exhibit geometrical isomerism.

asked Feb 20, 2014 by meena.p

1 answer

Among the following, the compound that can be most readily sulphonated is

asked Feb 20, 2014 by meena.p

1 answer

Which of the following has the highest nucleophilicity

asked Feb 20, 2014 by meena.p

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Which of the following has the highest nucleophilicity

asked Feb 20, 2014 by meena.p

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Which of the following has the most acidic hydrogen

asked Feb 20, 2014 by meena.p

1 answer

In the given conformation, if $C_2$ is rotated $C_2 -C_3$ bond anticlockwise by an angle of $120^{\circ}$ then the conformation obtained is

asked Feb 20, 2014 by meena.p

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The $C-H$ bond distance is the longest in

asked Feb 20, 2014 by meena.p

1 answer

Isomers which can be inter converted through rotation around a single bond are :

asked Feb 20, 2014 by meena.p

1 answer

In $CH_3CH_2OH$ the bond that undergoes heterolytic cleavage most readily is

asked Feb 20, 2014 by meena.p

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An isomer of ethanol is

asked Feb 20, 2014 by meena.p

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The bond order of individual carbon-carbon bonds is benzene is :

asked Feb 20, 2014 by meena.p

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