Silica sol__________________?

A.\tIs applied to the walls of the investment to produce hygroscopic expansion

B.\tIncrease the strength and the setting expansion of the phosphate-bonded investmentCorrect Answer

C.\tActs as a retarder in the silica bonded investments

D.\tActs as a refractory in the Silica bonded investments

Correct Option: B.\tIncrease the strength and the setting expansion of the phosphate-bonded investment

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