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Fertilizer Technology Quiz 2

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Fertilizer Technology Quiz 2

1 / 50

In the manufacture of H3 PO4 (ortho); strong H2 SO4 leaching wet process as compared to electric furnace process_____?

2 / 50

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

3 / 50

Nitrogen content of calcium ammonium nitrate (CAN) is ______ percent?

4 / 50

Leaching of phosphate rock by strong _____ acid produces phosphoric acid ?

5 / 50

Gas based fertiliser plants use__________?

6 / 50

Low grade coal is _______ to produce ammonia synthesis gas?

7 / 50

Dehydration of ammonium carbamate produces___________?

8 / 50

Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of__________?

9 / 50

Maximum stability of white phosphorous is at___________?

10 / 50

Naphtha in a fertiliser plant is used as a source of_____?

11 / 50

Effectiveness of a fertiliser is independent of the _____?

12 / 50

Dehydration of ammonium carbamate to yield urea is a/an ___________ reaction?

13 / 50

Multistage operation (as in the case of catalytic oxidation of SO2) is not carried out for NH3 synthesis, because of______?

14 / 50

Heating a mixture of phosphate rock, coke and sand in an electric furnace produces_____?

15 / 50

In an ammonia plant, the purge off is essential to_____?

16 / 50

H4P2O7 is the chemical formula of ______ phosphoric acid?

17 / 50

In calcium ammonium nitrate (CAN) fertiliser ______?

18 / 50

Fertiliser value of a nitrogenous fertiliser is expressed in terms of its _______ content?

19 / 50

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?

20 / 50

Hydrogen content of coke oven gas is _______ percent?

21 / 50

Electric process as compared to wet process (for the manufacture of phosphoric acid) ?

22 / 50

HPO3 is the chemical formula of _______ phosphoric acid?

23 / 50

Heating of ortho-phosphoric acid to about 900?C, produces__________?

24 / 50

Main component of bone ash is __________?

25 / 50

Flushing liquor used for cooling coke oven gas constitutes of ___________?

26 / 50

Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the___________?

27 / 50

Electric furnace method for production of phosphorous uses phosphate rock and ___________?

28 / 50

Fertiliser plants get their N2 requirements _______?

29 / 50

During conversion of ammonium carbamate into urea, presence of large excess of water_______?

30 / 50

Montecatini process is a widely used process for the manufacture of _____?

31 / 50

Nitrogen content of urea is about ______ percent ?

32 / 50

Nitrogen content in ammonium sulphate (a fertiliser) is around _______ percent?

33 / 50

Maximum nitrogen percentage is in_________?

34 / 50

Liquid ammonia and 60% nitric acid reaction (which produces ammonium nitrate) is_____?

35 / 50

In ammonia synthesis (N2 + 3H2 = 2NH3), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at_________?

36 / 50

In the manufacture of urea, the intermediate chemical formed is___________?

37 / 50

Lower temperature and large excess of ammonia in urea melt___________?

38 / 50

Heating of ortho-phosphoric acid to 250?C produces_____?

39 / 50

Formation of ammonium carbamate by reaction of NH3 with CO2 is a/an _______ reaction?

40 / 50

H3PO4 is the chemical formula of _______ phosphoric acid?

41 / 50

In natural gas, the C/H ratio (by weight) varies in the range of__________?

42 / 50

Low grade phosphate rock can be used in electrical furnace, because___________?

43 / 50

Montecatini process is used for the manufacture of______?

44 / 50

In ______ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed?

45 / 50

Nitric acid is produced on commercial scale in a fertiliser plant by_____?

46 / 50

Iron is not used alone as a catalyst in ammonia synthesis, because_____?

47 / 50

Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an _________ reaction?

48 / 50

Fertiliser produced during soda ash manufacture by dual process is ammonium________?

49 / 50

Main constituent of phosphate rock is_______?

50 / 50

Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at _______ ?C?

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