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Alcohols, Phenols, and Ethers — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryAlcohols, Phenols, and Ethers1 Mark
MCQ
Write the $\text{IUPAC}$ name of the given compound:$\text{HO}−\text{CH}_2​−\text{​CH}−\text{CH}_2​−\text{OH}​\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ∣ \\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3​​$
  • ✓
    $2-$Methylpropane$-1,3-$diol
  • B
    $2-$Methylpropan-$1,3-$dial
  • C
    $1-$Hydroxy$-2-$methylpropan$-1-$ol
  • D
    None of these
✓

Answer

Correct option: A.
$2-$Methylpropane$-1,3-$diol
The given compound can be numbered from left to right or vice versa. At the $2^{nd}$ position, there is a methyl group and is designated as $2-$Methyl.
The parent carbon chain contains $3$ carbon atoms resembling propane and at the positions $1$ and $3,$ there's the hydroxyl group designated as $1, 3-$diol.
So the $\text{IUPAC}$ name of the given compound is $2-$Methylpropane$-1, 3-$diol.

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