P2O5 content in superphosphate is about _____________ percent?

Related Mcqs:

1. P2O5 content in triple superphosphate is about ______________ percent?

   A. 42-50
   B. 15-20
   C. 85-90
   D. 70-75

2. Triple superphosphate which contains about 46% P2O5 is produced by the reaction of phosphate rock with ortho phosphoric acid of_____________ percent concentration?

   A. 25-28
   B. 52-54
   C. 75-80
   D. > 98

3. Triple superphosphate is made by reacting phosphate rock with _____________ acid?

   A. Phosphoric
   B. Nitric
   C. Sulphuric
   D. Hydrochloric

4. A phosphatic fertiliser contains 16% P2O5. It could be________________?

   A. Dicalcium phosphate
   B. Superphosphate
   C. Triple superphosphate
   D. None of these

5. P2O5 percentage in the phosphoric acid produced by wet process is about_________________?

   A. 10
   B. 30
   C. 50
   D. 70

6. Triple superphosphate is chemically represented as_____________________?

   A. CaF2.3Ca3(PO4)2
   B. 3Ca3(PO4)2
   C. Ca(PO3)2
   D. Ca(H2PO4)2

7. Superphosphate is manufactured by reacting phosphate rock with_____________________?

   A. Acetic acid
   B. Sulphuric acid
   C. Aluminium chloride
   D. None of these

8. Nitrogen content of urea is about _____________ percent ?

   A. 10
   B. 46
   C. 80
   D. 94

9. Nitrogen content of calcium ammonium nitrate (CAN) is _____________ percent?

   A. 10
   B. 25
   C. 50
   D. 80

10. Nitrogen content in ammonium sulphate (a fertiliser) is around ______________ percent?

    A. 5
    B. 20
    C. 50
    D. 65