Recent questions tagged ch12

Toutomerism is not exhibited by

asked Feb 26, 2014 by meena.p

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The compound , whose stereo-chemical formula is written below exhibits x geometrical isomers and y optical isomers.

asked Feb 26, 2014 by meena.p

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Out of the following , the one containing only nucleophiles is

asked Feb 26, 2014 by meena.p

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Which of the following rings in most strained ?

asked Feb 26, 2014 by meena.p

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The total number of carboxylic acid groups in the product P is :

asked Feb 26, 2014 by meena.p

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An organic compound A upon reacting with $NH_3$ gives B. On heating B gives C. C in presence of $KOH$ reacts with $Br_2$ to give $CH_3CH_2NH_2$ A is :

asked Feb 25, 2014 by meena.p

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Compound $(A),C_8H_9Br$ gives a white precipitate when warmed with alcoholic $AgNO_3$. Oxidation of $(A)$ gives a acid $(B)$. $C_8H_6O_4.(B)$ easily forms anhydride on heating . Identify the compound $(A)$.

asked Feb 25, 2014 by meena.p

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The IUPAC name of the compound :$CH_2 =CH-CH(CH_3)_2$

asked Feb 25, 2014 by meena.p

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How many optically active stereoisomers are possible for butane$-2, 3-$diols?

asked Feb 25, 2014 by meena.p

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The number of structural isomers for $C_6H_{14}$ is

asked Feb 25, 2014 by meena.p

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The IUPAC name of the compound

asked Feb 25, 2014 by meena.p

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The compound which gives the most stable carbonium ion on dehydration is

asked Feb 25, 2014 by meena.p

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Which of the following represents the given mode of hybridisation $Sp^2-Sp^2-Sp-Sp$ from left to right?

asked Feb 25, 2014 by meena.p

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Refer the below figure: Compound on hydrolysis in aqueous acetone will give,

asked Feb 25, 2014 by meena.p

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The correct statements about the compound: $H_3C(HO)HC - CH = CH -CH(OH)CH_3 (X)$ are:

asked Feb 25, 2014 by meena.p

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The correct statement(s) concerning the structures $E, F$ and $G$ is (are) (i) E,F and G are resonance structures (ii) E,F and E,G are tautomers (iii) F and G are geometrical isomers. (iv) F and G are diastereomers.

asked Feb 25, 2014 by meena.p

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The correct statements about the compound given below is (are) (i) The compound is optically active. (ii) The compound possesses centre of symmetry (iii) The compound possesses plane of symmetry (iv) The compound possesses axis symmetry.

asked Feb 25, 2014 by meena.p

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Tautomerism is exhibited by

asked Feb 25, 2014 by meena.p

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Which of the following compounds will show geometrical isomerism?(i) 2-butene (ii) Propene (iii) 1-phenylpropene (iv) 2-methyl-2-butene

asked Feb 25, 2014 by meena.p

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Only two isometric monochloro derivatives are possible for : (i) n-butane (ii) 2,4 -dimethylpentane (iii) benzene (iv) 2- methylpropane

asked Feb 25, 2014 by meena.p

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Dipole moment is shown by (i) 1,4 dichlorobenzene (ii) cis-1,2-dichloroethane. (iii) trans -1,2- dichleroethene (iv) trans-1,2- dichloro-2-pentene.

asked Feb 25, 2014 by meena.p

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Phenol is less acidic than (i) acetic acid (ii) p-methoxyphenol (iii) p- nitrophenol (iv) ethanol

asked Feb 24, 2014 by meena.p

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Resonance structure of a molecule should (i) Identical arrangements of atoms. (ii) nearly the same energy content. (iii) the same number of paired electrons. (iv) identical bonding

asked Feb 24, 2014 by meena.p

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The major product of the following reaction is :

asked Feb 24, 2014 by meena.p

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Arrange in order of decreasing trend towards ES (electrophilic substitution) reactions: Chlorobenzene (I), Benzene (II), Anilinium chloride (III), Toluene (IV)

asked Feb 24, 2014 by meena.p

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Among the following , the molecule with the highest dipole moment is :

asked Feb 24, 2014 by meena.p

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The correct stability order for the following species is

asked Feb 24, 2014 by meena.p

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In the following compounds?

asked Feb 24, 2014 by meena.p

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Give the numbers of N and M?

asked Feb 24, 2014 by meena.p

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The correct acidity order of the following is :

asked Feb 24, 2014 by meena.p

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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

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

asked Feb 24, 2014 by meena.p

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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

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

asked Feb 22, 2014 by meena.p

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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

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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

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

asked Feb 22, 2014 by meena.p

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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

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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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