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title: Plastics: useful and stubborn — the lesson's questions with trees and pragmatics · Chemistry
description: The 14 test and exam questions of lesson 29 «Plastics: useful and stubborn» of the chemistry course of Mova's primary school, each with its options, Mova's choice and the right answer, every sentence with its dependency tree and pragmatics.
---

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# Plastics: useful and stubborn

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The 14 questions of lesson 29 «Plastics: useful and stubborn» of the chemistry course of Mova's primary school with their options, 77 sentences, every one parsed by Mova with its syntax tree and pragmatics. How the student did on them: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/chemistry/29-plastics-useful-stubborn/).

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- [t1](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/t1/) — Kai: "chuck the corn plastic cup on the compost heap in the garden, it'll rot". What's true? — right ✓
- [t2](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/t2/) — "plastic's evil, ban all of it, even in hospitals". What would happen without plastic in hospitals? — right ✓
- [t3](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/t3/) — If you stretch a rubber band and let go, and then do the same with a plastic bag strip, what's different? — right ✓
- [t4](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/t4/) — A cartoon says plastic in the sea just melts away in the salty water. What's true? — right ✓
- [t5](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/t5/) — Dad holds up a bottle: "number 1 in the triangle means it's been recycled once". Right? — right ✓
- [t6](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/t6/) — Your mate wants to burn plastic rubbish on the bonfire "to get rid of it". Why not? — right ✓
- [t7](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/t7/) — Mia says plastic is made from melted sand. What's true? — wrong ✗
- [t8](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/t8/) — Why did people queue for hours for nylon stockings when they first came out? — right ✓
- [t9](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/t9/) — "the pan's coating is so slippery, how come?" — right ✓
- [t10](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/t10/) — If a plastic lunchbox is left on a hot car dashboard all day, what might happen? — wrong ✗
- [e1](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/e1/) — Which of the following statements most accurately characterises the molecular structure of plastics? — wrong ✗ · exam
- [e2](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/e2/) — Identify the principal reason for which plastic debris persists in the marine environment for prolonged periods. — right ✓ · exam
- [e3](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/e3/) — It is given that a numeral is printed within a triangle of arrows upon a plastic container. Ascertain the significance of the said numeral. — right ✓ · exam
- [e4](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/29-plastics-useful-stubborn/e4/) — Select the response that is consistent with the established facts concerning the combustion of plastics. — wrong ✗ · exam

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