What is the commercial use of silica gel?

1.	What is the commercial use of silica gel?
A.	Removal of organic pollutants from aqueous effluents
B.	Production of N2 from air
C.	Drying of air and other gases
D.	Separation of molecules based on size and shape
Answer» D. Separation of molecules based on size and shape

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What is the commercial use of silica gel?

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