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

Related Mcqs:

1. Reaction of ortho-phosphoric acid with phosphate rock produces _________________?

   A. Superphosphate
   B. Triple superphosphate
   C. Meta-phosphoric acid
   D. Monoammonium phosphate

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

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

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

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

4. Leaching of phosphate rock by strong ____________ acid produces phosphoric acid ?

   A. Sulphuric
   B. Hydrochloric
   C. Either A. or B.
   D. Neither A. nor B.

5. Phosphoric acid is produced in wet process from phosphate rock and____________________?

   A. Dilute H2SO4
   B. Concentrated H2SO4
   C. Concentrated NHO3
   D. Concentrated HCl

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

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

7. Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching ?

   A. Isopropyl alcohol
   B. Butyl alcohol
   C. Toluene
   D. Hexane

8. Reaction of anhydrous liquid ammonia with ortho-phosphoric acid produces____________________?

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

9. Reaction of ortho-phosphoric acid with soda ash produces______________?

   A. Sodium Tributyl phosphate (STPP)
   B. Tricresyl phosphate
   C. Tributyl phosphate
   D. Nitrophosphate

10. P2O5 content in superphosphate is about _____________ percent?

    A. 30-35
    B. 15-20
    C. 65-70
    D. 85-90