Recent questions tagged ch12

The following is the percentage composition of a compound. $Na = 16.08 \%, C = 4.19 \%, O = 16.78 \%$ and $H_2O = 62.95 \%$ . Its molecular formula is

asked Mar 5, 2014 by meena.p

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An organic compound contains $C=40 \%,O=53.34\%$ and $H-6.60 \%$ . The empirical formula of the compound is :

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$CH_3 -CHCl -CH_2-CH_3$ has a chiral centre. which one of the following represents its R- configuration?

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Refer the below diagram : It has chiral centre (*). It is

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The IUPAC name of $CH_3COCH(CH_3)_2$ is

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The IUPAC name of the below compound is :

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The IUPAC name of the following compound is :

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The IUPAC name of the following compound is :

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Hydrogenation of the below compound in the presence of poisoned palladium catalyst gives,

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Which of the following compound has wrong IUPAC name ?

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The carbon- carbon length in benzene is :

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Which of the following has zero dipole moment ?

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Increasing order of basic nature of $NH_3(I), CH_3NH_2(II) $ and -NH_2(III)( $ is

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The most stable free radical among the following is

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Meso-Tartaric acid is optically inactive due to the presence of

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In Lassaigne's test for nitrogen , the blue colour is due to the formation of

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The IUPAC name of

asked Mar 4, 2014 by meena.p

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Refer the below diagram : The IUPAC name of the compound is

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The correct name of below diagram is:

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An alkane with the formula $C_6H_{14}$ can be prepared by the hydrogenation of only two alkenes $(C_6 H_{12})$. IUPAC name of the alkane is :

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Which of the following does not show tautomerism ?

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Which of the following classes of organic compounds show metamerism

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Which of the following does not show geometrical isomerism ?

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Two elements $X$(atomic weight =$75$) and $Y$(atomic weight =16) combine to give a compound having $75.8 \%\; X$. The formula of the compound is

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A is a lighter phenol and B is an aromatic carboxylic acid. separation of a mixture of A and B can be carried out easily by using a solution of

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How many stereo isomers does this molecule have $CH_3CH =CHCH_2CHBrCH_3$

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Which of the following is optically inactive

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An organic compound contains carbon, hydrogen and oxygen. Its elemental analysis gave $C,38.71 \%$ and $H,9.67 \%$ .The empitical formula of the compound would be

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The correct decreasing order of priority for the functional groups of organic compound in the IUPAC system of momenclature is

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In Kjeldahl's method, nitrogen present is estimated as

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The kind of delocalization involving sigma bond orbitals is called,

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Compounds containing which of the following functional groups can exhibit geometrical isomerism

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Polarization of electrons in acrolein may be written,

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Which of the following compounds exhibits stereo isomerism

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How many structural (including stereoisomers ) isomers could be obtained by replacing one hydrogen of propene with chlorine ?

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How many chiral carbon atoms are present in $2,3,4$ trichloropentane ?

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The number of optical isomers formed hydrogenation of the compound, $(CH_3)_2C = CHCH_3$ are :

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The structure of $H_2C = C = CH_2$ is /has

asked Mar 3, 2014 by meena.p

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Absolute alcohol is prepared by

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An organic molecule necessarily shows optical activity if it

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Which of the following compounds will exhibit geometrical isomerism ?

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One among the following pairs of compounds is not isomers:

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Refer the below diagram :

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The formation of cyanohydrin from a ketone is an example of

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Optical isomerism arises from the presence of

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How many optical isomers are possible for the compound abdc - cabd?

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Which of the following correctly represents the $+I$ effect of the substituents :

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Inductive effect involves

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In the reaction : $ CH_3CHO +HCN \longrightarrow CH_3CH(OH)CN$ a chiral centre is produced . This product would be :

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Which one of the following does not have $SP^2$ hybridized carbon ?

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