Question detail

What is the effect of the structure of high density poly(ethene) on its properties?

Try the question, check the answer, then read the explanation to understand the curriculum point.

Show answer Topic hub Objective page

At a glance

MCQ

Type

practice

Style

Topic

Using materials

Question

A. It makes it more flexible than low density poly(ethene)
B. It increases its density and strength
C. It decreases its melting point
D. It makes it more susceptible to corrosion

Answer

The correct option is It increases its density and strength. This answer is correct because it matches the approved learning objective to explain how low density and high density poly(ethene) can both be produced from ethene under different conditions. (Chemistry only) in the subtopic Ceramics, polymers and composites.

Explanation

The correct option is It increases its density and strength. It increases its density and strength is correct because it directly supports the approved learning objective to explain how low density and high density poly(ethene) can both be produced from ethene under different conditions. (Chemistry only). This belongs to the subtopic Ceramics, polymers and composites within Using materials, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Ceramics, polymers and composites.

Common mistake

Confusing Poly(ethene) Types

Students often confuse the production processes of low density and high density poly(ethene), thinking they are produced under the same conditions.

Remember that low density poly(ethene) is produced at high temperatures and pressures, while high density poly(ethene) is produced at lower temperatures and pressures with a different catalyst.

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