For spinning viscose rayon, the extrusion spinnerettes are made of ___________________?
Correct answer: A. Platinum or gold alloys
- A. Platinum or gold alloys
- B. High carbon steel
- C. Aluminium
- D. Nickel
Explanation
Platinum and gold alloys withstand the corrosive viscose dope and can be formed with the very fine, accurately spaced holes required in spinnerettes. Common steels and aluminium would corrode or wear more readily.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Plant Design and Economics
803 free Plant Design and Economics 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 Plant Design and Economics questions
Hydrochloric acid is stored in a _____________ steel vessel?
Diamagnetic materials are magnetised________________?
Spark plugs, ignition tubes and electrodes are made of nickel ____________ alloys?
Atmospheric corrosion of metals result from their________________?
Ability of a material to ______________ is indicated by its damping capacity?
Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with_____________________?