Logo
Jeeify
MCQEasyJEE 2024Nomenclature (IUPAC & Common)

JEE Chemistry 2024 Question with Solution

According to IUPAC system, the compound is named as:

  • A

    Cyclohex-1-en-2-ol

  • B

    1-Hydroxyhex-2-ene

  • C

    Cyclohex-1-en-3-ol

  • D

    Cyclohex-2-en-1-ol

Answer

Correct answer:D

Step-by-step solution

Standard Method

Given: The compound contains a double bond and an alcohol group.

Find: The correct IUPAC name.

In IUPAC nomenclature, numbering starts from the alcohol group so that it gets the lowest locant. Then the position of the double bond is assigned accordingly.

Therefore, the correct name is Cyclohex-2-en-1-ol. Hence, the correct option is D.

Common mistakes

  • Starting the numbering from the double bond is incorrect because in IUPAC nomenclature the alcohol group has higher priority. Always assign the lowest locant to the −OH-OH group first.

  • Using an open-chain name such as 1-Hydroxyhex-2-ene is incorrect because the compound is cyclic. First identify the parent ring, then name the substituents and unsaturation on that ring.

Practice more Nomenclature (IUPAC & Common) questions

Get unlimited AI-adaptive practice, mastery tracking, and an AI tutor that explains every step — free to start.

Start free trialMore on Nomenclature (IUPAC & Common)

Related questions