$H_{3} C - C = C H - C H - C H_{3}$
$∣$ $∣$
$C l$ $C H_{3}$

IUPAC name is:

2-Chloro-4-methyl-2-pentene

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4-chloro-2-methyl-3-pentene

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4-chloro-2-methyl-2-pentene

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2-chloro-4, 4-dimethyl-2-butene

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Solution

The correct option is A 2-Chloro-4-methyl-2-pentene
The parent compound contains 5 C atoms. Hence, it is a derivative of pentane. It contains a $C = C$ double bond. Hence, it is named pentene. A chloro and a methyl substituent is also present. The carbon atoms are numbered from the end that is nearest to double bond.

The correct IUPAC name is 2-chloro-4-methyl-2-pentene.

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H3C−C=CH−CH−CH3 ∣ ∣ Cl CH3IUPAC name is:

$H_{3} C - C = C H - C H - C H_{3}$
$∣$ $∣$
$C l$ $C H_{3}$

IUPAC name is: