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Standard XII
Chemistry
Nomenclature of Carbonyls
Question

The structure of 6-hydroxyheptanal is:
  1. CH3−CH2−CH(OH)−CH2−CH2−CH2−CHO
  2. CH3−CH2−CH2−CH(OH)−CH2−CHO
  3. CH3−CH(OH)−CH2−CH2−CH2−CHO
  4. CH3−CH(OH)−CH2−CH2−CH2−CH2−CHO

A
CH3−CH(OH)−CH2−CH2−CH2−CHO
B
CH3−CH2−CH2−CH(OH)−CH2−CHO
C
CH3−CH2−CH(OH)−CH2−CH2−CH2−CHO
D
CH3−CH(OH)−CH2−CH2−CH2−CH2−CHO
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Solution
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C7H3−OH|C|6H−C5H2−C4H2−C3H2−C2H2−C1HO

The chain is of 7 carbon atoms. There are two functional groups present in the structure.
Aldehyde group is given priority and there is a sub functional group,i.e, alcohol at 6th carbon atom.

Hence, the IUPAC name of the compound is 6−hydroxyheptanal.

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Similar Questions
Q1
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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Q2
CH3−CHO and CH2=CHOH are a pair of
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Q3
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
View Solution
Q4
Name the functional groups present in the following compounds.
(i) CH2−CO−CH2−CH2−CH2−CH3
(ii) CH3−CH2−CH2−COOH
(iii) CH3−CH2−CH2−CH2−CHO
(iv) CH3−CH2−OH
View Solution
Q5

Name the functional groups present in the following compounds: [5 MARKS]

1. CH3−CH2−CH2−OH
2. CH3−CH2−CH2−COOH
3. CH3−CH2−CHO
4. CH3−CO−CH2−CH3
5. CH3−CH2−CO-OH


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