Unit Processes MCQ Set 1 1. What is the formula of formaidehyde-bisulfite ? a) HOCH2SO3Na b) CH3SO3Na c) HOCH2SO4 d) HOCH3SO2Na AnswerAnswer: a [Reason:] formaidehyde-bisulfite also called as “sodium hydroxymethanesulfonate” also, has the following formula HOCH2SO3Na. 2. What is the use of Lauryl sulphate? a) Foaming agent b) Cleaning agent c) Drying agent d) Wetting…
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