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Qualitative Analysis of Carbohydrates :
The metabolic processes in our body are mainly centred on glucose, which is a member of a large class of organic compounds called carbohydrates. These are generally referred to as sugars. Carbohydrates contain C, H and O atoms. Usually, H and O are present in the ratio of 2:1, just as in water; hence the name carbohydrates are in use.

Most of the tests of the carbohydrates are based on their reducing properties (due to the presence of reducing aldehyde or ketone groups). Fehling’s test, benedict’s test are the example of this. The unspecific Molisch’s test for carbohydrates is one of the examples of some tests which are based on the formation of furfural or furfural derivatives in presence of concentrated acids. For testing polysaccharides, iodine is found to be very useful.

This video explains describes some simple tests of carbohydrates.