Question

Which of the following gives red precipitate with Fehling's solution?

Options

• Butanone

• Benzaldehyde

• Mesityl oxide

• Butanal

Answer 1

Butanal

Explanation:

Only aliphatic aldehydes have a lowering effect. Fehling's solution has a property that the others don't have. ketones and aromatic aldehydes as a result, only With Fehling's, butanal produces a crimson precipitate solution from among the available options.