Salt is added in the kettle during soap manufacture to separate ___________________?
Correct answer: A. Soap from lye
- A. Soap from lye
- B. Glycerine from lye
- C. The metallic soap
- D. The unsaponified fat from soap
Explanation
Salt increases the density of the aqueous lye and decreases soap solubility, causing the soap to separate and float as a distinct layer. This salting-out step separates soap from the spent lye.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
The yield of tar from high temperature carbonisation of dry coal is about _______________ percent?
Main product in calcium carbide-water reaction is___________________?
The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to___________________?
Percentage of alcohol in beer may be around ______________________ percent?
Fatty material used in soap making is _______________________?
The main use of activated carbon in water treatment is to control ___________________?