HARD
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Why is benzoic acid less soluble in water than acetic acid?

Important Questions on Aldehydes, Ketones and Carboxylic Acids

MEDIUM

Given below are two statements: one is labelled as Assertion and the other is labelled as Reason.

Assertion: A mixture contains benzoic acid and napthalene. The pure benzoic acid can be separated out by the use of benzene.

Reason: Benzoic acid is soluble in hot water.

In the light of the above statements, choose the most appropriate answer from the options given below.

EASY
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their
MEDIUM
Why are the boiling points of carboxylic acids higher than the corresponding alcohols?
MEDIUM

Two statements are given belwo :

Statement I : The melting point of monocarboxylic acid with even number of carbon atoms is higher than that of with odd number of carbon atoms acid immediately below and above it in the series.

Statement II : The solubility of monocarboxylic acids in water decreases with increase in molar mass.

Choose the most appropriate option :

MEDIUM
Why are the boiling points of carboxylic acid higher than those of the corresponding alcohols?
MEDIUM

Statement (a): Carboxylic acids with C10 and above are insoluble in water.

Statement (b): Ethanoic acid is having less boiling point than propan-1-ol.

The correct answer is

MEDIUM

Directions : Each of these questions contains an Assertion followed by reason. Read them carefully and answer the question on the basis of following options. You have to select the one that best describes the two statements.
Assertion:p-Hydroxybenzoic acid has a lower boiling point than o-hydroxybenzoic acid.

Reason:o-Hydroxybenzoic acid has intermolecular hydrogen bonding.

HARD

Which is the stronger acid in each of the following pairs ? 

O2N-CH2-COOH and Cl-CH2-COOH

HARD

Which is the stronger acid in each of the following pairs ? 

C6H5COOH and C6H5-CH2-COOH 
MEDIUM
The molecular weight of benzoic acid in benzene as determined by depression in freezing point method corresponds to :
HARD

Which is the stronger acid in each of the following pairs ? 

CH32CH-CH2-COOH and CH32NH-CH2-COOH

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

(l)   CH3CH2CH2CH2OH
(ll)  CH3CH2CH2CHO
(lll) CH3CH2CH2 COOH
EASY
State the oxidation number of carbonyl carbon in methanal and methanoic acid respectively.
MEDIUM

Represent the union of two sets by Venn diagram for each of the following.

X={x | x is a prime number between 80 and 100}

Y={y | y is an odd number between 90 and 100}