Co-efficient of Thermal exansion of amalgam is______________?
(A) 6.6 a (ppm k-1)
(B) 11.4 a (ppm k-1)
(C) 14.0 a (ppm k-1)
(D) 25.0 a (ppm k-1)
Co-efficient of Thermal exansion of amalgam is______________?
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