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Define Descending type of paper chromatography?
In descending chromatography, the movement or flow of mobile phase is in downward direction. In this technique the solvent is kept in a trough at the top of chamber and then allowed to flow down the paper. The movement of the liquid is caused by capillary action, as well as, by gravitational pull.
The rate of flow of mobile phase is more rapid in this case as compared to that in ascending development. The basic material of the paper use for chromatography is a cellulose of high purity, which is present in 98.99 %. This paper is composed of randomly directed cellulose fibers. The cellulose itself is a network of long chains of carbohydrate with molecular weight of more than 1,00,000 possessing hydrophilic.
Define Procedure for Standardization of HCl for Saponification Number of Fats? Precisely weigh 2.65 g of anhydrous sodium carbonate and transfer it to 100 ml volumetric flask.
sturucture explain
short notes on cholesterol.
What is the main moral problem about the cloning of human individuals? Besides biological perils, a very serious moral problem includes the nucleus transplantation technology c
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What are the types of leukocytes and how are they classified into granulocytes and agranulocytes? The types of leukocytes are monocytes, lymphocytes, neutrophils, eosinophils
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