Aldehydes and ketones

The functional group of aldehydes is:

• 1 -COOH
• 2 -OH
• 3 -CO-
• 4 -CHO

Which reagent distinguishes aldehydes from ketones?

• 1 Sodium chloride
• 2 Bromine water
• 3 Litmus
• 4 Tollens' reagent

The simplest ketone is:

• 1 Ethanal
• 2 Propanone
• 3 Methanal
• 4 Butanone

Reduction of an aldehyde gives a:

• 1 Carboxylic acid
• 2 Ester
• 3 Primary alcohol
• 4 Secondary alcohol

Fehling's solution is reduced by aldehydes to give a:

• 1 Blue solution
• 2 White gas
• 3 Black solid
• 4 Red precipitate