Aldehydes, Ketones and Carboxylic Acids MCQs | Question – Paper 1 5


Topic: Aldehydes, Ketones and Carboxylic Acids, Test No.: 01, Total MCQs: 15

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Question 1

Which of the following acids does not exhibit optical isomerism? [CBSE AIPMT 2012]

A

Lactic acid

B

Tartaric acid

C

Maleic acid

D

α-amino acids

Question 2

CH3CHO and C6H5CH2CHO can be distinguished chemically by: [CBSE AIPMT 2012]

A
Tollen's reagent test
B
Fehling solution test
C
Benedict test
D
Iodoform test
Question 3

The correct order of decreasing acid strength of trichloroacetic acid (A), trifluoroacetic acid (B), acetic acid (C) and formic acid (D) is [CBSE AIPMT 2012]

A
A > B > C > D
B
A > C > B > D
C
B > A > D > C
D
B > D > C > A
Question 4

Which of the following reactions will not result in the formation of carbon-carbon bond? [CBSE AIPMT 2010]

A
Reimer-Tieman reaction
B
Friedel Crafts acylation
C
Wurtz reaction
D
Cannizzaro reaction
Question 5

One mole of a symmetrical alkane on ozonolysis gives two moles of an aldehyde having molecular mass of 44u. The alkene is: [AIEEE 2010]

A
Ethene
B
Propene
C
1-butene
D
2-butene
Question 6

One mole of an organic compound 'A' with the formula C3H8O reacts completely with two moles of HI to form X and Y. When 'Y' is boiled with aqueous alkali it forms Z. Z answers the iodoform test. The compound 'A' is ______. [Karnataka CET 2010]

A
Propan-1-ol
B
Propan-2-ol
C
ethoxyethane
D
methoxyethane
Question 7

The IUPAC name of is ______. [Karnataka CET 2010]

A
2-methyl-3-bromohexanal
B
2-methyl-3-bromobutanal
C
3-bromo-2-methylbutanal
D
3-bromo-2-methylpentanal
Question 8

The correct sequence of steps involved in the mechanism of Cannizzaro's reaction is _____. [Karnataka CET 2010]

A

nucleophilic attack, transfer of H- and transfer of H+

B

electrophilic attack by OH-, transfer of H+ and transfer of H-

C

transfer of H-, transfer of H+ and nucleophilic attack

D

transfer of H+, nucleophilic attack and transfer of H-

Question 9

The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits [Karnataka CET 2010]

A
geometrical isomerism
B
optical isomerism
C
both optical and geometrical isomerism
D
neither optical nor geometrical isomerism
Question 10

Benzaldehyde and acetone can be best distinguished using [Karnataka CET 2010]

A
hydrazine
B
Tollen's reagent
C
sodium hydroxide solution
D
2, 4-DNP
Question 11

In the following sequence of reactions, the alkene affords the compound 'B' [AIEEE 2008]

CH3CH = CHCH3 ,

The compound B is

A

CH3COCH3

B

CH3CH2CHO

C

CH3CHO

D

CH3CH2COCH3

Question 12

The compound formed as a result of oxidation of ethyl benzene by KMnO4 is [AIEEE 2007]

A
Benzyl alcohol
B
Benzoic acid
C
Acetophenone
D
Benzophenone
Question 13

Which of the following is correct? [CBSE AIPMT 2001]

A

Any aldehyde gives secondary alcohol on reduction

B

Reaction of vegetable oil with H2SO4 gives glycerin

C

C2H5OH, iodine with NaOH gives iodoform

D

Sucrose on reaction with NaCl give invert sugar

Question 14

A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives [IIT JEE 2001]

A
benzyl alcohol and sodium formate
B
sodium benzoate and methyl alcohol
C
sodium benzoate and sodium formate
D
benzyl alcohol and methyl alcohol
Question 15

Which of the following has most acidic hydrogen? [IIT JEE 2000]

A
3-Hexanone
B
2, 4-Hexanedione
C
2, 5-Hexanedione
D
2, 3-Hexanedione
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5 thoughts on “Aldehydes, Ketones and Carboxylic Acids MCQs | Question – Paper 1

  • reshma sen

    these ques are toooooooooooooooo hard !!!!!!!!!!!!!!!!

    • Mayank

      first step in aldol condensation, it forms ß hydroxy aldehyde which has one chiral centre hence optical isomerism, only after condensation it forms but-2-en-1-al whicjh shows geometrical iso, but here the question asks us about the first step.