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Medical Science
MEDIUM
ENGLISH
Medical Science
Silica sol__________________?
A
Is applied to the walls of the investment to produce hygroscopic expansion
Option A
Increase the strength and the setting expansion of the phosphate-bonded investment
Correct answer
C
Acts as a retarder in the silica bonded investments
Option C
D
Acts as a refractory in the Silica bonded investments
Option D
Correct answer: B
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