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Test: Preparation and Properties of Carboxylic Acids - JEE MCQ


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20 Questions MCQ Test - Test: Preparation and Properties of Carboxylic Acids

Test: Preparation and Properties of Carboxylic Acids for JEE 2024 is part of JEE preparation. The Test: Preparation and Properties of Carboxylic Acids questions and answers have been prepared according to the JEE exam syllabus.The Test: Preparation and Properties of Carboxylic Acids MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Preparation and Properties of Carboxylic Acids below.
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Test: Preparation and Properties of Carboxylic Acids - Question 1

Acetic acid can be halogenated in presence of phosphorus and chlorine. Formic acid cannot be halogenated with same way because of

Detailed Solution for Test: Preparation and Properties of Carboxylic Acids - Question 1
HVZ reaction is given by only those carboxylic acids which have -H-atom. has three -H-atoms but formic acid does not have -H-atom hence formic acid cannot be halogenated.
For e.g.
Test: Preparation and Properties of Carboxylic Acids - Question 2

The following reaction is

 

Detailed Solution for Test: Preparation and Properties of Carboxylic Acids - Question 2

This is Wolff Kishner reduction of Carbonyls to alkanes.

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Test: Preparation and Properties of Carboxylic Acids - Question 3

A colourless liquid, at room temperature, reacts with soda-lime to form sodium salt of a carboxylic acid and ammonia gas. The liquid is

Detailed Solution for Test: Preparation and Properties of Carboxylic Acids - Question 3
Only amides (but not acids and esters) undergo hydrolysis in presence of soda-lime to form sodium salt of a carboxylic acid and ammonia gas. Further, since the given compound is a liquid, it must be formamide, because propanamide is a solid.
Test: Preparation and Properties of Carboxylic Acids - Question 4
Which of the following on oxidation followed by hydrolysis gives pyruvic acid?
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Test: Preparation and Properties of Carboxylic Acids - Question 5

Identify the correct order of boiling points of the following compounds:

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Due to effect of the - COOH group, H-bonds in acids are much stronger than in alcohols; while aldehydes do not exhibit -bonding.

Test: Preparation and Properties of Carboxylic Acids - Question 6
Carboxylic acids are more acidic than phenol and alcohol because of
Detailed Solution for Test: Preparation and Properties of Carboxylic Acids - Question 6
In carboxylates (conjugate base of carboxylic acids), resonance is more significant because the two resonating structures are similar, while in phenoxide, the resonating structures are not equivalent, alkoxide ions do not show resonance.
Test: Preparation and Properties of Carboxylic Acids - Question 7
Which of the following compounds will react with solution to give sodium salt and carbon dioxide?
Detailed Solution for Test: Preparation and Properties of Carboxylic Acids - Question 7
Only acetic acid is more acidic than carbonic acid (conjugate acid of ) hence it dissolves in ,

stronger acid weaker acid
while phenol and -hexanol are less acidic than carbonic acid and hence do not dissolve in
Test: Preparation and Properties of Carboxylic Acids - Question 8
Which of the following acids has the smallest dissociation constant?
Detailed Solution for Test: Preparation and Properties of Carboxylic Acids - Question 8
Bromine is less electronegative than , further in is more away from the group than in .
Test: Preparation and Properties of Carboxylic Acids - Question 9
Which of the following orders of relative strengths of acids is correct?
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Test: Preparation and Properties of Carboxylic Acids - Question 10
An ester is boiled with . The product is cooled and acidified with concentrated HCl. A white crystalline acid separates. The ester is
Detailed Solution for Test: Preparation and Properties of Carboxylic Acids - Question 10
Ethyl benzoate on hydrolysis gives benzoic acid which is a solid, other esters give and HCOOH, both of which are liquids.
Test: Preparation and Properties of Carboxylic Acids - Question 11
The correct product of the following sequence of reactions
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Test: Preparation and Properties of Carboxylic Acids - Question 12


In the above sequence of reactions and are

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Test: Preparation and Properties of Carboxylic Acids - Question 13
Detailed Solution for Test: Preparation and Properties of Carboxylic Acids - Question 13
Intermediate is


which decarboxylates to

(when -keto acid is heated, is lost)
Test: Preparation and Properties of Carboxylic Acids - Question 14
The carboxyl functional group is present in
Detailed Solution for Test: Preparation and Properties of Carboxylic Acids - Question 14
Test: Preparation and Properties of Carboxylic Acids - Question 15
Identify the incorrect statement regarding acetic acid.
Detailed Solution for Test: Preparation and Properties of Carboxylic Acids - Question 15
Statement I is incorrect, whereas all other statements are correct.
Corrected statements is as follows, When calcium acetate is distilled in the presence of calcium formate, acetaldehyde is formed.
Test: Preparation and Properties of Carboxylic Acids - Question 16

The correct order of increasing acid strength of the compounds
(A)
(B)
(C)
(D)
is

Detailed Solution for Test: Preparation and Properties of Carboxylic Acids - Question 16

The correct order of increasing acid strength
Electron withdrawing groups increase the acid strength and electron donating groups decrease the acid strength.

Test: Preparation and Properties of Carboxylic Acids - Question 17
Number of compounds having hydrogen more acidic than cyclo hexan-1,3-dione
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Compounds I, IV and V will have more acidic hydrogen.
Test: Preparation and Properties of Carboxylic Acids - Question 18
Identify in the following sequence of reactions-
Detailed Solution for Test: Preparation and Properties of Carboxylic Acids - Question 18

(X) (Y) (Z)
Test: Preparation and Properties of Carboxylic Acids - Question 19

Reaction between solid ice and methyl magnesium bromide gives an addition compound which or acidification yields:

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Test: Preparation and Properties of Carboxylic Acids - Question 20

-bonding is the reason for dimerisation of:

Detailed Solution for Test: Preparation and Properties of Carboxylic Acids - Question 20
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