The name of the electrophile involved in the below reaction is:

1. Dichloromethyl cation \((^{+}CHCl_{2})\)

2. Formyl cation \((^{+}CHO)\)

3. Dichloromethyl anion \((^{-}CHCl_{2})\)

4. Dichlorocarbene (:CCl₂)

Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to:

What is the correct order of the carboxylic acids' strength?

I.

II.

III.

The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha-carbon is:

The product formed by the reaction of an aldehyde with a primary amine is:
1. Ketone
2. Carboxylic acid
3. Aromatic acid
4. Schiff base

The reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by the elimination of water. The reagents are:

Treatment of cyclopentanone with methyl lithium generates:

1. Cyclopentanonyl cation

2. Cyclopentanonyl radical

3. Cyclopentanonyl biradical

4. Cyclopentanonyl anion

Compounds that can exhibit tautomerism, are:

1. l and ll
2. l and lll
3. ll and lll
4. l, ll and lll

An organic compound X having molecular formula C₅H₁₀O yields phenyl hydrazone and gives a negative response to the iodoform test and Tollen's test. It produces n-pentane on reduction. X could be: