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Which branched chain isomer of the hydro...

Which branched chain isomer of the hydrocarbon with molecular mass `72mu` gives only one isomer of mono substituted alky halide ?

A

Tertiary butyl chloride

B

Neopentane

C

Isohexane

D

Neohexane

Text Solution

Verified by Experts

The correct Answer is:
B
Molar mass `=72 = C_(n) H_(2n) +2 = 12n + (2n + 2)`
`n =5`
Thus hydrocarbon is `C_(5) H_(12)`
Since it gives only single `C_(5)H_(11)` CI This suggests that `C_(5)H_(12)` is symmetrical
Hence it is containing all `12` equivalent H - atoms
`H_(3) Cunderset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(3) underset(Delta)overset(CH_(2))rarrH_(3)C-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(2)Cl+HCl` .
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Knowledge Check

  • Which branched chain isomer of the hydrocarbon with molecular mass 72mu gives only one isomer of mono substituted alkyl halide

    A
    Tertiary butyl chloride
    B
    Neopentane
    C
    Isohexane
    D
    Neohexane

  • Which branched chain isomer of the hydrocarbon with molecular mass 72 u gives only one isomer of monosubstituted alkyl halide ?

    A
    Tertiary butyl chloride
    B
    Neopentane
    C
    Isohexane
    D
    Neohexane

  • Which branched chain isomer of the hydrocarbon with molecular mass 72 gives only one isomer of monosubstituted alkyl halide?

    A
    Isopentane
    B
    Neopentane
    C
    Isohexane
    D
    Neohexane.

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