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6.1 Improving processes and products

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Question 6

An appliance recycling centre recovers four materials from discarded appliances.

MaterialMass recycled each month (tonnes)Energy to produce 1 tonne from raw materials (GJ)Energy to produce 1 tonne from recycled material (GJ)
Copper67010
Glass801612
Poly(ethene)207545
Zinc125530

For which material does recycling give the smallest total energy saving in one month?

[1]
A

Copper

B

Poly(ethene)

C

Glass

D

Zinc

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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