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Standard XII
Chemistry
NCERT
Question

Which of the following on oxidation gives ketone?
  1. CH3−CH2−CH2−OH
  2. CH3−CH2−OH
  3. CH3−CH(OH)−CH2−OH
  4. CH3−CH(OH)−CH−CH3

A
CH3−CH2−OH
B
CH3−CH2−CH2−OH
C
CH3−CH(OH)−CH−CH3
D
CH3−CH(OH)−CH2−OH
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Solution
Verified by Toppr

The oxidation of secondary alcohols gives ketones. Thus, the oxidation of the compounds of options C and D gives ketones.
However, if the hydroxyl group is present on the terminal carbon atom (primary alcohol) then the oxidation will result in an aldehyde. Thus the compounds of options A and B on oxidation will give aldehyde.

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Similar Questions
Q1
Identify the type of the following reaction of carbon compounds.
a. CH3 -CH2 -CH2-OH → CH3 -CH2 -COOH
b. CH3 -CH2 -CH3 → 3CO2 + 4H2O
c. CH3 -CH = CH -CH3 + Br2 → CH3 -CHBr - CHBr -CH3
d. CH3 -CH3 + Cl2 → CH3 -CH2 -Cl + HCl
e. CH3 -CH2 -CH2 -CH2 -OH → CH3 -CH2 -CH=CH2 + H2O
f. CH3 -CH2 -COOH + NaOH → CH3 -CH2 -COO - Na+ + H2O
g. CH3 -COOH + CH3 -OH → CH3 -COO- CH3 + H2O
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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
Give the IUPAC name of the following compounds:
CH3−CH2−OH|CH−CH2−CH2−CH2−CH2−CH2−CH2−CH2−CH2−CH3|CH−CH3
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Q4
The order of reactivity of following alcohols with halogen acids is:

(A) CH3CH2−CH2−OH

(B) CH3−CH2−C|CH3H−OH

(C) CH3−CH2−CH3|C|CH3−OH

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Q5
CH3−CH2−OH|CH−CH2−CH2−C|HCH3−CH2−CH3
The IUPAC name of the compound is:
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