Explanation

The reactivity of aldehydes towards nucleophilic addition depends on the size of the alkyl group attached to the carbonyl carbon.

Formaldehyde (HCHO) has no alkyl groups attached to the carbonyl carbon, making it the most reactive

Because there is no steric hindrance, and the electron-donating effect is minimal.

Explanation

When alcohol reacts with sodium, it produces alkoxide ions and hydrogen gas.

Explanation

Among the given options, n-propyl alcohol has the highest boiling point due to its linear structure allowing more hydrogen bonding.

Explanation

A carbocation is a carbon atom with a positive charge attached to three other atoms or groups.

Explanation

The pKb of n-propyl amine is approximately 3.32, indicating its basicity.

Explanation

The addition of HBr to isobutylene follows Markovnikov's rule, which results in the formation of tert-butyl bromide as the major product.

Explanation

Homolytic fission results in the formation of alkyl free radicals, where each atom retains one of the bonding electrons.

Explanation

Pyridine is a six-membered ring with nitrogen in its structure, which makes it a heterocyclic compound.

Explanation

Potassium ferrocyanide ​ [K[Fe(CN) 6] is an example of a complex salt

Because it contains a central metal atom (iron) bonded to ligands (cyanide ions)

Explanation

Bromine is the only non-metal that remains in liquid form at room temperature.

It is a reddish-brown liquid with a strong odor and is highly reactive.