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Production And Uses Of Npk Fertilisers (chemistry Only) (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'Production And Uses Of Npk Fertilisers (chemistry Only)' from the broader topic Using Resources. The test is geared towards the AQA exam board style syllabus.
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If a fertiliser label shows "10-20-10" (N-P-K), what do these numbers mean?
Which neutralisation step is used to make ammonium nitrate fertiliser industrially?
Which calculation gives the approximate mass of potassium in 100 kg of potassium chloride (KCl) if K comprises about 52% by mass?
Fertiliser production question: which two gases are reacted in the Haber process to make the ammonia used for N fertilisers?
Which of the following is a direct human health risk of drinking water with high nitrate levels from fertiliser runoff?
Which of these salts supplies both nitrogen and phosphorus when used as a fertiliser?
Which statement best describes how potassium chloride fertiliser is typically obtained?
Which agricultural practice helps reduce nitrate leaching from fields after fertiliser application?
Why can untreated phosphate rock not be used directly as an effective phosphorus fertiliser for most crops?
During the Ostwald process for making nitric acid from ammonia, what is the initial gaseous oxidation product formed from ammonia over a platinum catalyst?
Why are some fertilisers described by N-P-K numbers but sold as a “blended” fertiliser rather than a single chemical compound?