The rate controlling step in the manufacture of silicone rubber is the_________________?
Correct answer: C. Initial hydrolysis of silicone monomer
- A. Polymer termination step
- B. Condensation of siloxane to silicone
- C. Initial hydrolysis of silicone monomer
- D. None of these
Explanation
In silicone-rubber manufacture, the initial hydrolysis of the silicone monomer is treated as the rate-controlling step. It produces the reactive silanol species that subsequently condense into the silicone polymer.
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
Vulcanisation of rubber decreases its__________________?
Which of the following is the most important rubber compounding ingredient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness ?
Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are__________________?
Phosphates (e.g., tricresyl, tributyl, tetrabutyl, triphenyl etc.) are added to polymers to act as __________________?
A copolymer is formed by the combination of two or more monomer molecules_________________?
______________are produced by reacting polybasic acid (e.g. Phthalic anhydride) with polyhydric alcohol (e.g., glycerol) ?