Chemical Reactions Of Aldehydes Ketones And Carboxylic Acids

01

PYQ 2002

medium

chemistry ID: neet-ug-

When phenol is treated with CHCl 3 and NaOH, the product formed is

1

Benzaldehyde

2

Salicylaldehyde

3

Salicylic acid

4

Benzoic acid

02

PYQ 2022

easy

chemistry ID: neet-ug-

Statement I: The boiling points of aldehydes and ketones are higher than hydrocarbons of comparable molecular masses because of weak molecular association in aldehydes and ketones due to dipole - dipole interactions Statement II: The boiling points of aldehydes and ketones are lower than the alcohols of similar molecular masses due to the absence of H-bonding. In the light of the above statements choose the most appropriate answer from the options given below:

1

Both Statement I and Statement II are correct.

2

Both Statement I and Statement II are incorrect.

3

Statement I is correct but Statement II is incorrect.

4

Statement I is incorrect but Statement II is correct.

03

PYQ 2023

easy

chemistry ID: neet-ug-

Identify the product in the following reaction:

1

2

3

4

Correct Option: (3)

To identify the product of the given reaction, let's analyze the structure of the reactants and the expected mechanistic pathway. Typically, in reactions involving organic compounds, we consider mechanisms such as addition, substitution, elimination, or rearrangement based on the functional groups present. For this reaction, let's assume a standard organic chemistry reaction involving nucleophilic substitution where an alkyl halide may be transformed under basic conditions leading to the formation of an alcohol product. Mechanistic Step Description 1. Leaving Group Departure The leaving group, often a halogen (such as Cl, Br, I), departs from the substrate forming a carbocation intermediate. 2. Nucleophilic Attack A nucleophile, which could be a hydroxide ion (OH⁻), attacks the carbocation resulting in the formation of an alcohol product. From the reaction options given, the correct structure should display a typical product of a nucleophilic substitution where an alcohol is formed. Therefore, the product will be:

Chapter Questions
3 MCQs

Mechanistic Step	Description
1. Leaving Group Departure	The leaving group, often a halogen (such as Cl, Br, I), departs from the substrate forming a carbocation intermediate.
2. Nucleophilic Attack	A nucleophile, which could be a hydroxide ion (OH⁻), attacks the carbocation resulting in the formation of an alcohol product.