Question

What are the general test for carbohydrates?

Answer 1

Answer:

(a) Molisch's Test:

Molisch's test is a general test for carbohydrates. This test is given by almost all of the carbohydrates. In this test concentrated sulfuric acid converts the given carbohydrate into furfural or its derivatives, which react with α-naphthol to form a purple coloured product.

Answer 2

Starch Test: When iodine drops are deposited on a starch containing item, it turns blue-black in color. If not it remains the same. This is done on leaves and on food items like potatoes.