Q
Binder in phosphate bonded investment is______________?
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A
A. Magnesium oxide & phosphate
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B
B. Magnesium oxide & phosphoric acid
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C
C. Magnesium oxide & monoammonium phosphate
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D
D. Magnesium oxide & ortho phosphoric acid
Correct Answer:
C. C. Magnesium oxide & monoammonium phosphate