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Multiple choice general knowledge science & technology

Which of the following is a good fertilizer, and why?

  1. sylvite and gypsum – these are a potassium-bearing and a hydrated mineral, respectively

  2. apatite and sylvite – these are a phosphate and a potassium-bearing mineral, respectively

  3. halite and calcite – these are a salt and a component of cement, respectively

  4. cassiterite and albite – these are an aluminum- and a calcium-bearing mineral, respectively
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B Correct answer
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