NEET Exam  >  NEET Notes  >  Chemistry Class 12  >  DPP for NEET: Daily Practice Problems, Ch: Aldehydes, Ketones and Carboxylic Acids (Solutions)

Aldehydes, Ketones and Carboxylic Acids Practice Questions - DPP for NEET

Download, print and study this document offline
Please wait while the PDF view is loading
 Page 1


1. (a)
2. (c) Cannizzaro reaction - when an aldehyde containing no a – H
undergo reaction in presence of 50% KOH. It disproportionates to
form a molecule of carboxylic acid and a molecule of alcohol.
2 
3. (d)
4. (c) Due to resonance in carboxylate ion, the double bond character of
Page 2


1. (a)
2. (c) Cannizzaro reaction - when an aldehyde containing no a – H
undergo reaction in presence of 50% KOH. It disproportionates to
form a molecule of carboxylic acid and a molecule of alcohol.
2 
3. (d)
4. (c) Due to resonance in carboxylate ion, the double bond character of
C = O bond in carboxylic acids is greatly reduced as compared to
that in aldehydes and ketones.
5. (b)
This reaction is known as Clemmensen's reduction.
6. (a)
7. (d) Since, C when heated with Br
2
 in presence of KOH produces
ethylamine, hence it must be propanamide and hence the organic
compound (A) will be propanoic acid. The reactions follows.
Page 3


1. (a)
2. (c) Cannizzaro reaction - when an aldehyde containing no a – H
undergo reaction in presence of 50% KOH. It disproportionates to
form a molecule of carboxylic acid and a molecule of alcohol.
2 
3. (d)
4. (c) Due to resonance in carboxylate ion, the double bond character of
C = O bond in carboxylic acids is greatly reduced as compared to
that in aldehydes and ketones.
5. (b)
This reaction is known as Clemmensen's reduction.
6. (a)
7. (d) Since, C when heated with Br
2
 in presence of KOH produces
ethylamine, hence it must be propanamide and hence the organic
compound (A) will be propanoic acid. The reactions follows.
 
8. (d)
(a)
(b)
(c)
Page 4


1. (a)
2. (c) Cannizzaro reaction - when an aldehyde containing no a – H
undergo reaction in presence of 50% KOH. It disproportionates to
form a molecule of carboxylic acid and a molecule of alcohol.
2 
3. (d)
4. (c) Due to resonance in carboxylate ion, the double bond character of
C = O bond in carboxylic acids is greatly reduced as compared to
that in aldehydes and ketones.
5. (b)
This reaction is known as Clemmensen's reduction.
6. (a)
7. (d) Since, C when heated with Br
2
 in presence of KOH produces
ethylamine, hence it must be propanamide and hence the organic
compound (A) will be propanoic acid. The reactions follows.
 
8. (d)
(a)
(b)
(c)
(d) (Oil of wintergreen)
9. (b) NaBH
4
 selectively reduces the aldehyde group to alcohol without
affecting double bond in a organic compound. So, X is NaBH
4
.
C
6
 H
5
 CH = CHCHO  C
6
 H
5
 CH = CHCH
2
OH
10. (b)
11. (c)
This process is known as esterification.
12. (a) Addition of HCN to carbonyl compounds is nucleophilic addition
reaction. The order of reactivity of carbonyl compounds is
Page 5


1. (a)
2. (c) Cannizzaro reaction - when an aldehyde containing no a – H
undergo reaction in presence of 50% KOH. It disproportionates to
form a molecule of carboxylic acid and a molecule of alcohol.
2 
3. (d)
4. (c) Due to resonance in carboxylate ion, the double bond character of
C = O bond in carboxylic acids is greatly reduced as compared to
that in aldehydes and ketones.
5. (b)
This reaction is known as Clemmensen's reduction.
6. (a)
7. (d) Since, C when heated with Br
2
 in presence of KOH produces
ethylamine, hence it must be propanamide and hence the organic
compound (A) will be propanoic acid. The reactions follows.
 
8. (d)
(a)
(b)
(c)
(d) (Oil of wintergreen)
9. (b) NaBH
4
 selectively reduces the aldehyde group to alcohol without
affecting double bond in a organic compound. So, X is NaBH
4
.
C
6
 H
5
 CH = CHCHO  C
6
 H
5
 CH = CHCH
2
OH
10. (b)
11. (c)
This process is known as esterification.
12. (a) Addition of HCN to carbonyl compounds is nucleophilic addition
reaction. The order of reactivity of carbonyl compounds is
Aldehydes (smaller to higher) Ketones (smaller to higher), Then
PhCOPh < Ph.COCH
3
  < CH
3
COCH
3
 < HCHO  
The lower reactivity of ketones is due to presence of two alkyl group
which shows +I effect. The reactivity of ketones decreases as the
size of alkyl group increases.
13. (b)
 
14. (a) The correct order of increasing acid strength
(Me)
2
CH.COOH < CH
3
COOH < MeOCH
2
COOH  <  CF
3
COOH
Electron withdrawing groups increase the acid strength and electron
donating groups decrease the acid strength.
15. (b) Acetic acid does not have –CHO grouping, while all others
(HCOOH, HCHO and CH
3
CHO) have –CHO grouping
16. (b) Pinacolone is oxidation product of pinacol.
        
Read More
135 videos|348 docs|182 tests

Top Courses for NEET

135 videos|348 docs|182 tests
Download as PDF
Explore Courses for NEET exam

Top Courses for NEET

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Related Searches

Free

,

Extra Questions

,

Important questions

,

Ketones and Carboxylic Acids Practice Questions - DPP for NEET

,

Ketones and Carboxylic Acids Practice Questions - DPP for NEET

,

past year papers

,

Summary

,

MCQs

,

Semester Notes

,

mock tests for examination

,

Previous Year Questions with Solutions

,

shortcuts and tricks

,

Objective type Questions

,

Viva Questions

,

ppt

,

study material

,

video lectures

,

Aldehydes

,

Sample Paper

,

Ketones and Carboxylic Acids Practice Questions - DPP for NEET

,

pdf

,

Aldehydes

,

Aldehydes

,

practice quizzes

,

Exam

;