2954454
Beschreibung
Quiz von raquelpuyuelo, aktualisiert more than 1 year ago
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Erstellt von raquelpuyuelo
vor etwa 9 Jahre
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Frage 1
Frage
The MAIN raw material to make plastics is....?
Antworten
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carbon
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oil, petroleum
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cellulose
Frage 2
Frage
Which of the following is/are the reasons of using plastics?
Antworten
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They are cheap
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They can be moulded into different shapes easily
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They are very heavy
Frage 3
Frage
Which of the following statements about plastics is correct?
Antworten
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There are no cross-links between polymer chains in thermosetting plastics
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Thermoplastics are biodegradable
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Polyester is a thermoplastic that is usually used to make shirts
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Compression moulding is usually used to mould thermoplastics
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