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6.1 Improving processes and products

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Question 13
F

NPK fertilisers provide plants with the elements nitrogen, phosphorus and potassium.

Which mixture of two compounds provides all three of these elements?

[1]
A

NH4NO3\mathrm{NH_{4}NO_{3}}NH4​NO3​ and KCl\mathrm{KCl}KCl

B

(NH4)3PO4\mathrm{(NH_{4})_{3}PO_{4}}(NH4​)3​PO4​ and KNO3\mathrm{KNO_{3}}KNO3​

C

(NH4)2SO4\mathrm{(NH_{4})_{2}SO_{4}}(NH4​)2​SO4​ and (NH4)3PO4\mathrm{(NH_{4})_{3}PO_{4}}(NH4​)3​PO4​

D

K2SO4\mathrm{K_{2}SO_{4}}K2​SO4​ and KNO3\mathrm{KNO_{3}}KNO3​

Markscheme

6.1 Improving processes and products Questions

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

61 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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