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6.1 Improving processes and products

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Question 45

Four roof coverings each cover the same area. The life-cycle assessment includes the energy used to produce their materials.

Roof coveringMass needed to cover the area (g)Energy needed to make the material (MJ/kg)
Aluminium sheet4000160
Clay tiles45 0004
Polycarbonate sheet300090
Steel sheet800035

Which roof covering needs the second lowest total energy to make?

[1]
A

Clay tiles

B

Steel sheet

C

Polycarbonate sheet

D

Aluminium sheet

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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