Which of the following aldehydes gives a red precipitate with Fehling solution?

What will be the product of the following reaction?

Benzaldehyde on heating with acetone in the presence of $NaOH$ gives:

The mass of $NH_3$ produced when $131.8 \ kg$ of cyclohexanecarbaldehyde undergoes Tollen's test is $..... \ kg$. (Nearest Integer) Molar Mass of $C = 12 \ g/mol$,$N = 14 \ g/mol$,$O = 16 \ g/mol$.

The major product $(A)$ is:

The final product of the given reaction is?