Which of the following is used as a lubricant in the moulding powder f – McqOptions

MCQOPTIONS

1.	Which of the following is used as a lubricant in the moulding powder from urea-formaldehyde resin?
A.	zinc stearate
B.	ammonium sulphamate
C.	trimethyl phosphate
D.	none of the mentioned
Answer» B. ammonium sulphamate

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