Plastic articles are normally produced by _____________ moulding?
Correct answer: A. Injection
- A. Injection
- B. Green sand
- C. Shell
- D. Dry sand
Explanation
Injection moulding melts plastic and forces it into a closed mould, making it suitable for producing large numbers of shaped plastic articles. Green sand, shell and dry sand are moulding materials or methods mainly associated with casting metals.
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