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Organic Chemistry: Some Basic Principles and Techniques — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryOrganic Chemistry: Some Basic Principles and Techniques1 Mark
MCQ
$\text{IUPAC}$ name of the compound: $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\\text{CH}_3-(\text{CH}_2)_4-\text{CH}-\text{C}-\text{CH}_3\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{C}_2\text{H}_5(\text{CH}_2)_2-\text{CH}_3$
  • ✓
    $5 −$ ethyl $−4, 4−$dimethyl decane.
  • B
    $4 −$ ethyl $4, 5$ dimethyl decane.
  • C
    $3, 4−$ dimethyl $− 3 −$ Hexane.
  • D
    $6, 7−$ dimethyl decane.
✓

Answer

Correct option: A.
$5 −$ ethyl $−4, 4−$dimethyl decane.
  1. $5 −$ ethyl $− 4, 4 −$ dimethyl decane.

Numbering should be started from right side. $2$ methyl and one ethyl groups are attached $C_4$​ and $C_5$ respectively.
So the $\text{IUPAC}$ name of this compound is $5 −$ ethyl $− 4, 4 −$ dimethyldecane.

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