Carboxylic Acid & Derivatives Test

Result

Carboxylic Acid & Derivatives Test - 20

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is least acidic?

A
C₂H₅OH

B
CH₃COOH

C
C₆H₅OH

D
ClCH₂COOH

Solution

Alcohols are less acidic than phenols which are less acidic than carboxylic acids
Question 2
1 / -0

Hydrolysis of trichloromethane with aqueous KOH gives?

A
acetic acid

B
methanol

C
formic acid

D
ethanol

Solution

Hydrolysis of trichloromethane with aqueous KOH-

Hence the hydrolysis of trichloromethane with aqueous KOH gives formic acid (HCOOH).
Question 3
1 / -0

Acetic acid reacts with PCl₅ to form

A
CH₂ClCOOH

B
CHCl₂COOH,

C
CH₃COCI

D
CH₃COOCI

Solution
Question 4
1 / -0

HCOOH reacts with conc H₂SO₄ to produce:

A
CO

B
CO₂

C
NO

D
NO₂

Solution

CO(carbon monoxide) gas is evolved when a formic acid (HCOOH) reacts with sulphuric acid(H₂SO₄)

Sulphuric acid is both an oxidizing agent as well as a dehydrating agent.
Question 5
1 / -0

In a set of reactions acetic acid yielded a product S

The structure of S would be

A

B

C

D

Solution
Question 6
1 / -0

Which of the following decreasing order of acid strength of

I. Methanoic acid II. Ethanoic acid

IV. Propanoic acid IV. Butanoic acid

is correct?

A
I > II > IIII > IV

B
IV > III > II > I

C
I > IV > III > II

D
IV > I > II > III

Solution

Greater the +I effect of alkyl group lesser is the acididc strength. Thus order of acidic strengh is as per option"a"
Question 7
1 / -0

Between CH₃COOH and HCOOH, the HCOOH will be:

A
less acidic

B
equally acidic

C
more acidic

D
non-acidic

Solution

Both HCOOH and CH₃COOH are weak acids. CH₃COOH is a slightly weaker acid than HCOOH. The strengths of carboxylic acids vary with the total electron-withdrawing power of the atoms bonded to the carboxyl group. The more electron-withdrawing the substituent group, the stronger the acid.
Question 8
1 / -0

4-Methylbenzenesulphonic acid reacts with sodium acetate to give

A

B

C

D

Solution
Question 9
1 / -0

Which of the following compounds is the reactant in Rosenmund's reaction?

A
CH₃COOCH₃

B
CH₃CHO

C
CH₃CH₂Cl

D
CH₃COCl

Solution

In Rosenmund's reduction, CH₃COCl is the reactant.
Question 10
1 / -0

Which one of the following is a strong reducing agent?

A
Ethanoic acid

B
Benzoic acid

C
Methanoic acid

D
Chloroacetic acid

Solution

Like aldehydes, formic acid behaves as reducing agent it is oxidized to carbonic acid (unstable acid ), which decomposes into Carbon dioxide and water.