No we can use an adjective with the insread of the noun here, but it canno be used with possesive 's

Yes – "delicious" is considered non-gradable and in informal or emphatic speech, modifiers like "completely" are used for emphasis.

“She bought a lovely small round French table” – this follows the standard order: opinion, size, shape, origin, noun.

Non-gradable – it expresses an extreme state and doesn’t work with modifiers like “very,” but does with “absolutely.”

No. We do not put and between the adjectives of different cathegories.

No – "boiling" is a non-gradable adjective, so using “slightly” (a gradable modifier) with it is incorrect.

Postpositive adjectives like “interested” can follow certain nouns, especially in formal or legal English, or to distinguish a specific subset.

No – "big" is a gradable adjective, and "absolutely" is used with non-gradable adjectives like "enormous" or "terrified."

A nice red dress – opinion (nice) comes before color (red) in the correct adjective order.

No – "freezing" is non-gradable and doesn’t work with “very.” A correct alternative would be “absolutely freezing.”

Yes it is correct, no need to change the version with and sounds worse.

something cheap adjectives are used AFTER INDEFINITE pronouns.

She wore a beautiful long Spanish silk dress – the correct order is opinion, size/length, origin, material.