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

Which compound is commonly sold as a potassium fertiliser (K fertiliser) and is typically mined rather than chemically synthesised?

Which of these salts supplies both nitrogen and phosphorus when used as a fertiliser?

During the Ostwald process for making nitric acid from ammonia, what is the initial gaseous oxidation product formed from ammonia over a platinum catalyst?

What is a simple laboratory test to show that a soil extract or fertiliser contains nitrate ions?

A soil analysis shows N = 0.05% and K = 0.03% (both low), while P is adequate. A farmer wants to correct both low N and K cheaply. Which practical choice is best?

Fertiliser production question: which two gases are reacted in the Haber process to make the ammonia used for N fertilisers?

Which agricultural practice helps reduce nitrate leaching from fields after fertiliser application?

Which compound is produced when ammonia is neutralised with nitric acid to give a nitrogen fertiliser?

Which industrial catalyst is commonly used in the Haber process to increase the rate of ammonia production?

Which of these statements correctly explains why nitrogen fertilisers boost plant growth?

Which processing acid is used to make “triple superphosphate” (a concentrated P fertiliser) from phosphate rock?