Important Questions of Hydrocarbons for NEET Chemistry | Zigya
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    CBSE

    Subject

    Chemistry
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    NEET Chemistry : Hydrocarbons

    Multiple Choice Questions

    11.

    By which one of the following compounds both CH4 and CH3 - CH3 can be prepared in one step?

    • CH3I

    • CH3OH

    • CH3CH2I

    • C2H5OH

    Answer
    • 12.

    The least energetic conformation of cyclohexane is:

    • Boat form

    • Half chair form

    • Chair form

    • Twisted form

    Answer
    • 13.

    An unknown silver salt of monoacidic alkyne contains 67.08% silver. The structure of the alkyne is:

    • CH3-C≡CH

    • CH3-C≡CH-CH3

    • CH3-CH2-C≡CH

    • CH≡CH

    Answer
    • 14.

    Addition of which of the following reagents to alkene is stereospecific:

    I.Br2          II. KMnO4

    III. BH3 THF/H2O2.NaOH

    Select the correct reagent:

    • Both I and II

    • Both II and III

    • Both I and III

    • I, II and III

    Answer
    • 15.

    The reduction of 4-octyne with H2 in the presence of Pd/CaSo4 quinoline gives:

    • trans-4-octene

    • cis-4-octene

    • a mixture of cis and trans-4-octene

    • a completely reduced product C8H18

    Answer
    • 16.

    The homologue of ethyne is

    • C2H2

    • C2H6

    • C3H8

    • C3H4

    Answer
    • 17.

    Butyne-1 and butyne-2 can be distinguished by

    • H2SO4

    • AgNO3 + NH4OH

    • K2Cr2O7

    • NH4OH

    Answer
    • 18.

    What is obtained, when potassium succinate soluton is electrolysed ?

    • Ethane

    • Ethene

    • Ethyne

    • All of these

    Answer
    • 19.

    Which one of the following alkenes will react faster with H2 under catalytic hydrogenation conditions?

    (R = Alkyl substituent)

    Answer
    • 20.

    Predict the product:

    Answer
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