Raschig ring made of porcelain cannot be used for treating concentrated___________________?
Correct answer: C. Alkalis
- A. Hydrochloric acid
- B. Nitric acid
- C. Alkalis
- D. Sulphuric acid
Explanation
Porcelain is resistant to many acids, including hydrochloric and nitric acids, but concentrated alkalis attack silica-containing ceramic materials. Hence porcelain Raschig rings are unsuitable for concentrated alkali service.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Mass Transfer Operations
669 free Mass Transfer Operations 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 Mass Transfer Operations questions
Tower diameter may be decreased by__________________?
The humid volume may be increased by increasing the____________________?
Pick out the correct relationship. (Where, Ri = internal reflux ratio Ro = external reflux ratio.) ?
Molecular diffusivity of a liquid__________________?
At a fixed pressure, the humidity depends upon the partial pressure of vapor in the mixture. Humidity of a vapour free gas is ________________ percent.?
All moisture in a non-hygroscopic material is the ________________ moisture?