Q. Which of the following compounds twould give the following set of qualitative analysis?
(i) Fehling's Test : Positive
(ii) Na fusion extract upon treatment with sodium nitroprusside gives a blood red colour but not prussian blue.

 1427  140 JEE MainJEE Main 2023Aldehydes Ketones and Carboxylic Acids Report Error

Solution:

Aromatic aldehydes do not give Fehling's test.. Both nitrogen and sulfur must be present to obtain blood red colour Sodium nitroprusside gives blood red colour with S & N.