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I. CH(3) - CH(2) - CH(2) - CH(2) - OH ...

I. `CH_(3) - CH_(2) - CH_(2) - CH_(2) - OH`
II. `CH_(3) - CH_(2) - underset(OH)underset(|)(CH) - CH_(3)`
III. `CH_(3) - underset(OH) underset(|)overset(CH_(3))overset(|)(C) - CH_(3)`
IV. `CH_(3) - underset(CH_(3))underset(|)(CH) - CH_(2) - OH`
V. `CH_(3) - CH_(2) - O - CH_(2) - CH_(3)`
VI. `CH_(3) - O - CH_(2) - CH_(2) - CH_(3)`
VII. `CH_(3) - O - underset(CH_(3))underset(|)(CH) - CH_(3)`
Which of the above compounds form pairs of metamers ?

Text Solution

Verified by Experts

Metamerism arises due to different alkyl chains on either side of the functional group in the molecule. In the given structure V and VI or VI and VII form a pair of metamers because they differ in carbon atoms on the either side of the functional group, i.e., O-atom.
`{:(V. CH_(3) - CH_(2) - O - CH_(2) - CH_(3)" ethoxy ethane"),(VI. CH_(3) - O - CH_(2) - CH_(2) - CH_(3) " methoxy propane"):} } "Metamers"`
`{:(VI. CH_(3) - O - CH_(2) - CH_(2) - CH_(3) " methoxy propane"),(VII. CH_(3) - O - underset(underset(CH_(3))(|))(CH) - CH_(3) " methoxy isopropane" ):} } "Metamers"`
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I. CH_(3) - CH_(2) - CH_(2) - CH_(2) - OH II. CH_(3) - CH_(2) - underset(OH)underset(|)(CH) - CH_(3) III. CH_(3) - underset(OH) underset(|)overset(CH_(3))overset(|)(C) - CH_(3) IV. CH_(3) - underset(CH_(3))underset(|)(CH) - CH_(2) - OH V. CH_(3) - CH_(2) - O - CH_(2) - CH_(3) VI. CH_(3) - O - CH_(2) - CH_(2) - CH_(3) VII. CH_(3) - O - underset(CH_(3))underset(|)(CH) - CH_(3) Identify the pairs of compounds which are functional group isomers

I. CH_(3) - CH_(2) - CH_(2) - CH_(2) - OH II. CH_(3) - CH_(2) - underset(OH)underset(|)(CH) - CH_(3) III. CH_(3) - underset(OH) underset(|)overset(CH_(3))overset(|)(C) - CH_(3) IV. CH_(3) - underset(CH_(3))underset(|)(CH) - CH_(2) - OH V. CH_(3) - CH_(2) - O - CH_(2) - CH_(3) VI. CH_(3) - O - CH_(2) - CH_(2) - CH_(3) VII. CH_(3) - O - underset(CH_(3))underset(|)(CH) - CH_(3) Identify the pair of compounds that represents chain isomerism

Knowledge Check

  • The IUPAC name for CH_(3) - underset(OH)underset(|)(CH) - CH_(2) - underset(OH)underset(|)overset(CH_(3))overset(|)(C) - CH_(3) is:

    A
    1, 1-Dimethylbutane -1, 3-diol
    B
    4-Methylpentane-2, 4-diol
    C
    2-Methylpentane-2, 4-diol
    D
    1, 3, 3-Trimethylpropane-1, 3-diol

  • The IUPAC name of CH_(3) - underset(OH)underset(|)CH-CH_(2)-underset(OH) underset(|)overset(CH_(3))overset(|)-CH_(3) is

    A
    1,1-dimethyl-1,3-butanediol
    B
    2-methyl-2,4-pentanediol
    C
    4-methyl-2,4-pentanediol
    D
    1,3,3-trimethyl-1,3-propanediol

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    I. CH_(3) - CH_(2) - CH_(2) - CH_(2) - OH II. CH_(3) - CH_(2) - underset(OH)underset(|)(CH) - CH_(3) III. CH_(3) - underset(OH) underset(|)overset(CH_(3))overset(|)(C) - CH_(3) IV. CH_(3) - underset(CH_(3))underset(|)(CH) - CH_(2) - OH V. CH_(3) - CH_(2) - O - CH_(2) - CH_(3) VI. CH_(3) - O - CH_(2) - CH_(2) - CH_(3) VII. CH_(3) - O - underset(CH_(3))underset(|)(CH) - CH_(3) Identify the pairs of compounds that represents position isomerism.

    Note : Consider structures I to VII and answer the questions 23 - 26. I. CH_3 - CH_2 - CH_2 - CH_2 - OH II. CH_3 - CH_2 - underset(underset(OH)|) CH - CH_3 III. CH_3 - underset(underset(OH)|) overset(overset(CH_3)|)C- CH_3 IV. CH_3 - underset(underset(CH_3)|) CH - CH_3 - OH V. CH_3 - CH_2 - O - CH_2 - CH_3 VI. CH_3 - O - CH_2 - CH_2 - CH_2 - CH_3 VII. CH_3 - O - underset(underset(CH_3)|) CH - CH_3 Which of the above compounds form pairs of metamers ?

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    CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH_(2)-underset(O)underset(||)(C)-NHCH_(3)

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