Question

Give two examples of compounds having aldehyde functional group

Answer 1

Answer:

monosacharides polysaccharides oligosachrides

Answer 2

Answer:

Formaldehyde and acetaldehyde are two compounds with aldehyde functional group.

Explanation:

Aldehydes are organic compounds with the functional group -CHO.

Formaldehyde and acetaldehyde are the most important aldehydes. They are both soluble in water. Formaldehyde has the formula HCHO and acetaldehyde $\bold{\mathrm{CH}_{3} \mathrm{CHO}}$.  

Both the compounds are highly reactive. Formic acid is produced by oxidation of Formaldehyde while Acetic acid is produced by the oxidation of Acetaldehyde.

They can be confirmed as aldehydes through the ‘silver mirror test’ by the addition of Tollen's reagent. They also respond to the Cannizaro's reaction.