Chemistry Carboxylic Acids MCQs Chapter 13 Class 12

Created on February 10, 2022 By Ali Durrani

Chemistry Ch 13 Class 12 Carboxylic Acids and its Derivatives

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1 / 78

An ester is prepared by the reaction of:

NTS 2011
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Two alcohols

B) Carboxylic acid and alcohol

C) Ketone and alcohol

D) Aldehyde and alcohol

2 / 78

Which one has fruity smell?

Alcohol

Ethers

Esters

Carboxylic Acids

3 / 78

Which type of carboxylic acid is produced from the hydrolysis of nitriles?

PMC Practice 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Beta-hydroxy carboxylic acids

B) Acids, having one carbon more than the starting material

C) Acids having one carbon less than the starting material

D) Alpha-hydroxy acids

4 / 78

The formula of esters is

PMC Sample 2
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) R – COOH

B) R – COR

C) R – COOR

D) R – COH

5 / 78

Chemical formula of Malonic acid:

C3H8O4

C2H204

C6H12O6

C3H4O4

6 / 78

Carboxylic acids do not give the characteristics reaction of >C=O group because of:

PMC Practice 1
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Polar nature

B) Resonance

C) Symmetrical structure

D) Attached alkyl group

7 / 78

Lysine is a
amino acid

Acidic

Basic

Neutral

Amphoteric

8 / 78

What is correct order of acidic strength?

Carboxylic acid > alcohols > phenol > water

Carboxylic acid > phenol > water > alcohol

Water > alcohol > carboxylic acid > phenol

Phenol > alcohol > water > carboxylic acid

9 / 78

The same carboxylic acid is obtained either by hydrolysis of a nitrite X or by oxidation of alcohol Y. Which pair could be X and Y? X Y

a

b

c

d

10 / 78

) Acetic acid is used in making

Leather shoes

Rubber shoes

Plastic shoe

None of thes

11 / 78

High molecular mass organic compounds, upon hydrolysis yield amino acids are called _______.

PMC Sample 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Carbohydrates

B) Lipids

C) Proteins

D) DNA

12 / 78

) Which of the following is not a use of acetic acid?

As a coagulant for latex in rubber industry

manufacture of pickles

Used in silvering of mirrors

None of these

13 / 78

Which of the following carboxylic acids will be the most acidic?

NUMS 2016
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) CH3CHClCH2COOH

B) CH3CH2CCl2COOH

C) CH3CH2CHClCOOH

D) CH3CH2CH2COOH

14 / 78

Which of the following is not an aromatic compound)

Picric

Phthalic acid

Tartaric acid

Salicylic acid

15 / 78

Carboxylic acids form dimers due to _________.

PMC Practice 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Small sizes

B) Polarity of C-O bond

C) H-bonding

D) Dipole-Dipole interactions

16 / 78

Solubility of carboxylic acids in water decrease with

Decrease in molecular mass

Increase in molecular mass

Both a and b

None of these

17 / 78

Which of the following acid solutions is used for the seasoning of food?

PMC Practice 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Butyric acid

B) Phthalic acid

C) Lactic acid

D) Acetic acid

18 / 78

Which one of the following compounds act as a catalyst when alcohols react with carboxylic acids.

UHS 2018
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Pt

B) Conc. HNO3

C) Ni

D) Conc. H2SO4

19 / 78

Solubility of carboxylic acids ______?

PMC Sample 1
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Decreases with increase of volume

B) Decreases with increase in molecular mass

C) Increases with increase in molecular mass

D) None of these

20 / 78

Hydrolysis of Nitriles produces:

NUMS 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Carboxylic acid

B) Aldehydes

C) Ketones

D) Esters

21 / 78

Which of the following is branched amino acid?

a

b

c

all of these

22 / 78

By treating CO2 with Grignard’s reagent, the following compound is obtained;

NUMS 2019 Cancelled
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Aromatic compounds

B) Alcohols

C) Carboxylic acid

D) Ethers

23 / 78

Acetic anhydride is a product of acetic acid, as a result of the following reaction:

NUMS 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Dehydration

B) Reduction

C) Oxidation

D) Esterification

24 / 78

What is the product of both fermentation reactions and fractional distillation:

NTS 2010
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) An ester

B) An acid

C) An alcohol

D) A soap

25 / 78

What is the least number of carbon atoms in amino acids?

1

2

3

4

26 / 78

Nitriles (RCN), on hydrolysis, in the presence of a mineral acid yield:

UHS 2019
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Ethers

B) Carboxylic acids

C) Aldehydes

D) Alcohols

27 / 78

To get the carboxylic acid containing C atoms less than C atoms in parent aldehyde we do hydrolysis of:

Cyanohydrins

Amino Acids

Esters

Amides

28 / 78

The compounds having -COOH group are called as_______?

PMC Sample 2
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Aldehydes

B) Ketones

C) Carboxylic acids

D) Alcohols

29 / 78

Which of the following is the strongest acid?

PMC 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Propanoic acid

B) Fluoroethanoic acid

C) Trichloroethanoic acid

D) Nitroethanoic acid

30 / 78

Which of the following is most soluble in water?

PMC Practice 1
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Ethanoic acid

B) Pentanoic acid

C) Hexanoic acid

D) Butanoic acid

31 / 78

Acetic acid derived from the word ‘Acetum’ which means_______?

PMC Sample 1
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Acetic acid

B) Bitter

C) Citric

D) Vinegar

32 / 78

For preparation of carboxylic acid, alkyl nitrite is required. Alkyl nitrite can be prepared by treating KCN with:

Alkyl halide

Alcohol

Water

Acetaldehyde

33 / 78

Fatty Acids are:

Aliphatic Monocarboxylic Acids

Obtained from sugars

Contain a suffix "al"

With low boiling point

34 / 78

In the case of HOCH2CH2CH2COOH, from where is numbering started?

PMC Practice 2
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) OH group is given number 1 position

B) Carboxylic acid is given number 1 position

C) COOH is given number 3 position

D) COOH is given number 4 position

35 / 78

Chemical formula of MaIonic Acid is?

C3H4O4

C4H4O4

C6H10O4

C5H10O4

36 / 78

Carboxylic acids can be reduced to corresponding alcohols. Which of the following reagent can be used for this purpose?

UHS 2019
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) KMnO4

B) LiAlH4

C) K2Cr2O4

D) H2SO4

37 / 78

In esterification, alcohol reacts with:

Acetaldellye

Halogens

Carboxylic acid

None

38 / 78

Ease of esterification of the following alcohols CH3CH2OH(I),(CH3)2CHOH and (CH3)3COH(III) with HCOOH is:

NUMS 2017
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) I < II < III

B) III < II < I

C) II < I < III

D) I = II = III

39 / 78

Which one is the carbonyl protecting group?

Carboxylic acid

Ester

Alcohol

Amino Derivatives

40 / 78

Which one will act as a strong acid?

UHS 2018
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Chloroethanoic acid

B) Ethanoic acid

C) Trichloroethanoic acid

D) Dichloroethanoic acid

41 / 78

An ester is prepared by:

NUMS 2014
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Two alcohols

B) Carboxylic acid and alcohol

C) Ketone and alcoho

D) Aldehyde and alcohol

42 / 78

What happens if we react a carboxylic acid with an acyl chloride?

NUMS 2019 Cancelled
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) It forms an acid anhydride

B) It forms an acyl halide

C) It does not react due to resonance

D) It does not react due to bad leaving group

43 / 78

The reaction CHCH + H2O + 3(O) shows the formation of ________.

NUMS 2018
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Acetic acid

B) Picric acid

C) Oxalic acid

D) Formic acid

44 / 78

In IUPAC nomenclature, Carboxylic acids are named as_______?

PMC Sample 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Alkoxy acid

B) Alkanoic acid

C) Alkyl carboxylic acid

D) Alkoxylate acid

45 / 78

Reagent used to reduce a carboxylic acid to an alkane is:

NUMS 2019 Reconduct
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Ni / H2

B) NaBH4

C) P / HI

D) LiAlH4

46 / 78

Hydrolysis of acyl chloride results in the formation of:

PMC 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Acid anhydride

B) Carboxylic acid

C) Amides

D) Esters

47 / 78

Which of the following is an example of Monocarboxylic acid?

PMC Sample 2
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Oxalic acid

B) Methanoic acid

C) Glutaric acid

D) Adipic acid

48 / 78

Acetic acid is used in curing of? b

Meat

Fish

Vegetables

Both a and b

49 / 78

HCOOH is the structure of:

NUMS 2018
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Acetic acid

B) Formic acid

C) Valeric acid

D) Caproic acid

50 / 78

Amino acids are prepared by?

Suckers synthesis

Dow's method

h) Williamson's synthesis

Sabatier-Sendern's synthesis

51 / 78

Benzyl acetate gives us which flavour?

NUMS 2019 Cancelled
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Raspberry

B) Pineapple

C) Jasmine

D) Apricot

52 / 78

Strongest acid among the following is:

NUMS 2014
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) HCOOH

B) CH3COOH

C) (CH3)2CHCOOH

D) (CH3)3CCOOH

53 / 78

Which of the following is used as coagulation for latex in rubber industry

Acetic acid

Amino acid

Ethyl alcohol

Rayon

54 / 78

Which one of the following is neutral amino acid:

Alanine

Glyclne

Valine

All of these

55 / 78

The carbonic acid which Is named after butter is:

Capric acid

Enanthic acid

Butyric Acid

Formic acid

56 / 78

Which of the following is correct general formula of aliphatic carboxylic acid ?

PMC Sample 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) RCOOH

B) ArCOOH

C) PhCOOH

D) None of these

57 / 78

Carboxylic acids are formed by the hydrolysis of ________.

PMC Practice 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Ester & Nitriles

B) Nitriles & Amines

C) Alkenes & Alkynes

D) Esters & Alcohols

58 / 78

Acetic acid is used in treatment of?

Ear canal Infection

Pneumonia

Abdominal pain

Vomiting

59 / 78

Which type of carboxylic acid is produced from the hydrolysis of nitriles?

PMC Sample 2
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Beta-hydroxy carboxylic acids

B) Acids having one carbon more than the starting material

C) Acids having one carbon less than the starting material

D) Alpha-hydroxy acids

60 / 78

Carboxylic acid reduction to alcohol can be achieved by using?

PMC Sample 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) H₂/Ni

B) Pd/C

C) NaBH₄

D) LiAlH₄

61 / 78

Which of the following reagent is required for preparation of acyl chloride (CH3COCl) from ethanoic aicd?

UHS 2019
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) PCl5

B) POCl3

C) CH3Cl

D) HCl

62 / 78

Which of the following cannot be used to convert butanoic acid to butanoyl chloride?

NUMS 2016
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) PCl3

B) PCl5

C) CCl4

D) SOCl2

63 / 78

Amino acid is usually known by a

Common name

IUPAC name

Both a and b

None of these

64 / 78

On reacting with which of the following carboxylic acids produce CO₂?

PMC Sample 1
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Carbonate

B) Bicarbonate

C) Bisulphites

D) Both a and b

65 / 78

What is common when carboxylic acid is reacted with base or with alcohol?

NUMS 2019 Cancelled
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Catalyst

B) Formation of ester

C) Formation of salt

D) Formation of water

66 / 78

There is double bond in oleic acid between carbon numbers:

7-8

8-9

10-11

9-10

67 / 78

Which of these in an aqueous solution of equal concentration has the lowest pH?

NUMS 2019 Cancelled
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Chloroethanoic acid

B) Ethanoic acid

C) Ethylamine

D) Phenol

68 / 78

Cyanohydrins when reacted with mineral acid produces ________?

PMC Sample 2
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Beta Hydroxy carboxylic acids

B) Alpha hydroxy carboxylic acids

C) Carboxylic acids

D) Unsaturated acids

69 / 78

Which of the following is not the physical property of acetic acid?

NUMS 2017
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) It is a colorless liquid with the boiling point of 118 C

B) It is miscible with water, alcohol and ether in all proportions

C) It is used in the manufacture of pickles

D) Takes part in the metabolism of one-carbon compounds

70 / 78

Which of the following reagents will reduce butanoic acid to butanol?

NUMS 2016
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) LiAlH4

B) LiAlH4.H2O

C) Mg(BH4)2

D) All of the above

71 / 78

If 2-butene is treated with KMnO4 the product formed will be:

Butanoic acid

Propanoic acid

Butyric acid

Acetic acid

72 / 78

Which one of these is a soluble carbohydrate:

Fructose

Starch

Cellulose

Amylase

73 / 78

Sodium Benzoate on reacting with soda lime forms:

NUMS 2015
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Benzoic Acid

B) Benzene

C) Toluene

D) Benzaldehyde

74 / 78

Chemical formula of Malonic acid: b) CEI-11206
a) C3H804

C3H8O4

C2H204

C6H12O6

C3H4O4

75 / 78

Vinegar is basically acid:

Acetic

Citrus

Formic

Butyric

76 / 78

Which of the following carboxylic acids is used in medicine as a local irritant?

PMC Practice 2
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Formic acid

B) Acetic acid

C) Benzoic acid

D) Amino acid

77 / 78

Carboxylic acids can be prepared by action of and carbon dioxide

Sodium hydroxide

Grignard's reagent

Alcoholic KOH

Alkaline KMn0.

78 / 78

Which of the following is an example of aromatic carboxylic acid?

PMC Practice 2
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Ethanoic acid

B) Butanoic acid

C) Adipic acid

D) Phthalic acid

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Chemistry Carboxylic Acids MCQs Chapter 13 Class 12

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