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  • Question

  • H3PO4 is the chemical formula of __________ phosphoric acid.


  • Options
  • A. pyro
  • B. ortho
  • C. meta
  • D. none of these

  • Correct Answer
  • ortho 

    • Fertiliser Technology problems

    Search Results

    • 1. Base suspension fertiliser essentially contains

    • Options
    • A. 13% N2 and 43% P2O5
    • B. 43% N2 and 13% P2O5
    • C. 43% N2 and 13% K2O
    • D. 43% K2O and 43% P2O5
      • Discuss
    • 2. Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium

    • Options
    • A. carbonate
    • B. phosphate
    • C. bicarbonate
    • D. silicate
      • Discuss
    • 3. Reaction of orthophosphoric acid with soda ash produces

    • Options
    • A. sodium tripolyphosphate (STPP)
    • B. tricresyl phosphate
    • C. tributyl phosphate
    • D. nitrophosphate
      • Discuss
    • 4. Urea is represented as

    • Options
    • A. NH2.CO.NH2
    • B. NH3CO.CH3
    • C. NH.CO2.NH
    • D. NH3.CO2.NH3
      • Discuss
    • 5. Phosphoric acid is produced in wet process from phosphate rock and

    • Options
    • A. dilute H2SO4
    • B. concentrated H2SO4
    • C. concentrated NHO3
    • D. concentrated HCl
      • Discuss
    • 6. Action of phosphoric acid on rock phosphate produces

    • Options
    • A. superphosphate
    • B. triple superphosphate
    • C. nitrophosphate
    • D. diammonium phosphate
      • Discuss
    • 7. Red phosphorous is changed into white phosphorous by

    • Options
    • A. heating in presence of light.
    • B. melting under pressure.
    • C. vaporisation followed by condensation.
    • D. none of these.
      • Discuss
    • 8. Hydrogen content of coke oven gas is __________ percent.

    • Options
    • A. 4
    • B. 22
    • C. 58
    • D. 84
      • Discuss
    • 9. Two gas based fertiliser plants are located in

    • Options
    • A. Maharashtra and Gujarat
    • B. Maharashtra and Orissa
    • C. Gujarat and Madhya Pradesh
    • D. Jharkhand and Chattisgarh
      • Discuss
    • 10. Lower temperature and large excess of ammonia in urea melt

    • Options
    • A. increases biuret formation
    • B. decreases biuret formation
    • C. is undersirable
    • D. does not effect biuret formation
      • Discuss

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