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8.1. Organic chemistry Nomenclature of organic compounds — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry8.1. Organic chemistry Nomenclature of organic compounds1 Mark
MCQ
The $IUPAC$ name of${(C{H_3})_2}CH - C{H_2} - C{H_2}Br$ is
  • A
    $1-$ bromo pentane
  • B
    $2-$ methyl and $4$ bromo butane
  • ✓
    $1-$ bromo and $3-$ methyl butane
  • D
    $2-$ methyl and $3$ bromo propane
✓

Answer

Correct option: C.
$1-$ bromo and $3-$ methyl butane
c
$IUPAC$ name of $\left( CH _3\right)_2 CH - CH _2- CH _2 Br$ is $1$-Bromo-$3$-methylbutane. The parent chain has $4$ carbon atoms with a methyl substituent $\left( CH _3\right)$ at $C -3$ and a bromine atom at $C -1$

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