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Standard XII
Chemistry
Nomenclature of Alcohols
Question

IUPAC name of the following compound is:


CH3−CH(C2H5)−CH2−CH(OH)−CH3

A
4-Methyl -2- hexanol
B
4-ethyl -2- pentanol
C
2-ethyl -2- pentanol
D
3-methylhexanol
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Solution
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IUPAC name of CH3−CH(C2H5)−CH2−CH(OH)−CH3 is 4-methyl -2- hexanol.
The parent compound contains a 6 C atom chain and a hydroxyl group. Hence, it is a derivative of hexanol. The hydroxyl group is present on the second C atom and methyl substituent is present on the fourth C atom.

Note: The longest chain of C atoms containing the −OH group is selected as the parent alkane and numbered from the end closer to −OH group.

Hence, the correct option is A

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Similar Questions
Q1

The IUPAC name of the following compound is?

CH3−CH3−CH(CH2−CH3)−CH2−CH(CH3)−CH3


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Q2

Write IUPAC names of the following

@CH3-CH2-CH=CH2
@CH3-CH2-CH2-C(CH3)2-CH3
@CH3-CH2-CHO
@CH3-CH(OH)-CH3
@CH3-CH2-CH2-COOH

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Q3

The IUPAC name of the following compound is?

CH3−CH2−CH2−C|HCH3−CH2−CH3|CH−CH3


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Q4
CH3−CH2−CH2−CH2−O||C−O−CH2−CH3
The compound given above can be named as:
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Q5

Write the IUPAC names of the following structural formulae.

a. CH3-CH2-CH2-CH3
 b. CH3-CHOH-CH3
c. CH3-CH2-COOH
 d. CH3-CH2-NH2
e. CH3-CHO f. CH3-CO-CH2-CH3
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