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6.1 Improving processes and products

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Question 40

Worn car tyres are shredded into rubber crumb for use in a playground surface.

Why is shredding a suitable way to recycle the tyres?

[1]
A

Shredding removes contamination from the rubber, so the crumb is pure enough for the surface.

B

Shredding lowers the density of the rubber, so the crumb is light enough for the surface.

C

Shredding raises the tensile strength of the rubber, so the crumb is strong enough for the surface.

D

Shredding needs no melting, so it suits rubber that cannot be melted and reshaped.

Markscheme

6.1 Improving processes and products Questions

  1. GCSE
  2. /Chemistry
  3. /6.1 Improving processes and products

136 exam-style questions on OCR GCSE Chemistry 6.1 Improving processes and products, covering 6.1.1 Extracting metals industrially and by electrolysis, 6.1.2 Life cycle assessment and recycling, 6.1.3 Biological methods of metal extraction, 6.1.4 The Haber process and the production of fertilisers, 6.1.5 Alloys and their uses, 6.1.6 Corrosion and its prevention, 6.1.7 Comparing and selecting materials, and 6.1.8 Industrial conditions, rate and position of equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.

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