Low pressure steam (with saturation temperature between 105 to 120°C) – McqOptions

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1.	Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about __________ mm Hg (referred to a 760 mm mercury barometer).
A.	450
B.	250
C.	750
D.	650
Answer» E.

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