Collapsible tubes for tooth paste are produced by _____________ extrusion?
Correct answer: C. Impact
- A. Direct
- B. Indirect
- C. Impact
- D. None of these
Explanation
Collapsible tubes are made by impact extrusion, in which a rapidly moving punch forces the metal or polymer blank to flow around it and form a thin-walled tube. This process is particularly suited to short hollow articles such as toothpaste tubes.
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
Thermosetting plastic materials___________________?
Polyurethane cannot be used to make____________________?
Polyvinyl chloride (PVC) ____________________?
Polymethyl methacrylate (PMMA) which is also known as Perspex and is produced by bulk polymerisation of methyl methacrylate is not a ______________ polymer?
Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation ?
Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their________________?