Practice Test 1
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IUPAC name of the compound is :

  • Solution

    3-methoxypropanal

In Lassaigne test a violet colour obtained indicates the presence of

  • Solution

    Violet colour in Lassaigne's test indicates the presence of sulpur.

    \(Na_{2}S+ \underset{sodium\: nitroprusside}{Na_{2}[Fe(NO)(CN)_{5}]}\rightarrow \underset{violet\: coloured\: complex}{Na_{4}[Fe(CN)^{5}NOS]}\)

The IUPAC name of the compound shown below is :

  • Solution

    3-bromo-1chlorocyclohexene

Which of the following compounds has wrong IUPAC name?

  • Solution

    The correct name is 3 - methylbutan - 2 - ol

The absolute configuration of the following :

  • Solution

    So compound is (2S, 3S)

The IUPAC name of the compound CH3OCH2CH2CH2O2CH2 CH2 is :

  • Solution

    \(CH_{3}-O-\overset{1}{CH}_{2}-\overset{2}{CH_{2}}-\overset{3}{CH_{2}}-O-CH_{2}CH_{3}\)

    3-ethoxy-1-methoxypropane

The IUPAC name of the compound :

  • Solution

    IUPAC name is 3-cyanopentane-1,5-dinitrile

Which pairs have same percentage of carbon?

  • Solution

    is the answer.
    Molecular formula of CH3COOH = C2H4O2
    Both the compounds given have same empirical formula that is CH2O. So, percentage of carbon in both of them will be same.

The IUPAC name of CH3-C≡C-CH(CH3)2is:

  • Solution

    4-methyl-2-pentyne

The number of enantiomers of the compound CH3CHBr CHBCOOH is :

  • Solution

    No. of asymmetric carbon = 2
    No.of enantiomers = 22 = 4.

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Organic Chemistry : Some Basic Principles And Techniques
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