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After drying process the liquid phase is removed from the gel and ___________ is performed.

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After drying process the liquid phase is removed from the gel and ___________ is performed.

(a) Calcination

(b) De-oxygenation

(c) Oxygenation

(d) Hydrogenation

I got this question in an internship interview.

I'd like to ask this question from Sol-Gel Method and Chemical Reduction Method topic in chapter Nano Materials of Applied Chemistry

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Right answer is (a) Calcination

The best I can explain: After drying process the liquid phase is removed from the gel and calcination is performed in order to enhance the mechanical properties. Alcohol is used as a solvent.

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