Nitrogen content of urea is about _____________ percent ?

Related Mcqs:

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

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

2. Prilling of urea should be accomplished (in a sprayer) just above the melting point of urea with minimum of retention time, otherwise it will result in__________________?

   A. Low bulk density product
   B. Biuret formation
   C. Non-spherical prills
   D. Substantially wet non-flowing and sticky product

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

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

4. Nitrogen content of a nitrogenous fertiliser is 35%. It could be___________________?

   A. Urea
   B. Ammonium nitrate
   C. Calcium ammonium nitrate (CAN)
   D. Ammonium sulphate

5. Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it___________________?

   A. Has a pungent smell
   B. Vaporises at normal temperature
   C. Is toxic and highly corrosive
   D. Is in short supply

6. P2O5 content in superphosphate is about _____________ percent?

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

7. The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about ____________ percent?

   A. 60
   B. 30
   C. 95
   D. 100

8. During nitric acid manufacture, catalytic oxidation of ammonia at 800°C in presence of platinum catalyst produces nitrogen oxide. Conversion of NH3 to NO is about ______________ percent?

   A. 38
   B. 68
   C. 82
   D. 98

9. Dehydration of ammonium carbamate (to produce urea) is a/an _____________ reaction?

   A. Reversible
   B. Catalytic
   C. Exothermic
   D. Endothermic

10. _____________ is the undesirable by-product produced in the manufacture of urea ?

    A. Ammonium carbonate
    B. Biuret
    C. Carbon dioxide
    D. Ammonium carbamate