Question

Aldol condensation is
1) Electrophilic substitution reaction
2) Nucleophilic substitution reaction
3) Elimination reaction
4) Addition- Elimination reaction​

Answer 1

Aldol condensation is an Electrophilic substitution reaction.

• Electrophilic substitution reaction is a chemical reaction in which an electrophile removes an active group from a compound, usually, but not always, a hydrogen atom.
• Electrophilic aromatics substitution reactions are part of the aromatic compound and are a common way of introducing functional groups into benzene rings. Some aliphatic compounds can replace electrophilically.
• Thus, an electrophilic substitution reaction refers to a reaction when an electrophile converts another electrophile into a living environment. Haloarene undergoes normal electrophilic reactions to the benzene ring such as halogenation, nitration, sulphonation, and Friedel-Crafts reactions.

Answer 2

Answer:

Aldol condensation is 1) an Electrophilic substitution reaction.

Explanation:

1) Electrophilic substitution reaction: the reactions involve the replacement of an atom or group from the organic molecule with another similar part is known as a substitution reaction. the reaction which is bought about by electrophiles is called electrophilic substitution reaction so Aldol condensation is an example of an electrophilic substitution reaction at alpha hydrogen in enols or enolate ions. hence, the option is Correct.

2) nucleophilic substitution reaction: The reactions which are bought about by nucleophiles are called nucleophilic substitution reactions. In these reactions, a stronger nucleophile usually displaces a weaker nucleophile. example- Hydrolysis of an alkyl halide with an aqueous base. hence, it is Incorrect.

3) Elimination reaction: they involve the removal of atoms or groups from the organic compound under suitable conditions to give an unsaturated molecule. hence, it is Incorrect.

4) Addition- Elimination reaction​: In Some nucleophilic aromatic substitution reactions occur via a two-step mechanism. In the first step, an addition reaction, and in the second step, an elimination reaction occurs. The overall mechanism is known as an addition-elimination mechanism. Hence, it is Incorrect.