What is the product of intramolecular aldol condensation reaction?

Which of the following is not the product of an intramolecular aldol condensation?

Which of the following is not the product of an intramolecular aldol condensation?

Write Aldol condensation reaction.

What is the product of the following intramolecular aldol condensation reaction? [qquad H] [qquad O]

What is the product of the following intramolecular aldol condensation reaction? OHC-(CH_{2})_{4}-CHO \overset{base}underset{heat}{\rightarrow}

Aldol condensation is a reaction given by

Carbonyl compound which contains alpha-H gives aldol condenation reaction in presence of alkaline medium. The reaction between two molecules of acetaldehyde take placeas follows in presence of base Intramolecular aldol condensation reaction is given by