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6.1 Improving processes and products

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Question 11

An uncoated iron survey marker stands beside a field. It is exposed to air and rain.

Which change is expected to slow the rusting of the marker?

[1]
A

Wrap it tightly in a damp cloth to keep the air away from it

B

Scrape off loose rust each month, leaving the bare iron uncovered

C

Fit a cover that keeps rain off the marker but lets air circulate

D

Spread salt around its base so that ice does not form on it

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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