A. Is applied to the walls of the investment to produce hygroscopic expansion
B. Increase the strength and the setting expansion of the phosphate-bonded investment
C. Acts as a retarder in the silica bonded investments
D. Acts as a refractory in the Silica bonded investments
Correct Answer: Increase the strength and the setting expansion of the phosphate-bonded investment ✔
Last Updated: February 07, 2020