1.

If mercury is used as a pattern material in place of wax, then for the preparation of mould, mercury is kept at temperature_____

A. below -38 ⁰C
B. 0 ⁰C
C. 0 to 38 ⁰C
D. -38 to 0 ⁰C
Answer» B. 0 ⁰C


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