Related Questions

Leaching of phosphate rock by strong __________ acid produces phosphoric acid.
A Sulphuric
B Hydrochloric
C Either A or B
D Neither A nor B
Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with
A Acidic refractory
B Rubber
C Karbate
D Lead or acid-proof bricks
Phosphoric acid is produced in wet process from phosphate rock and
A Dilute H2SO4
B Concentrated H2SO4
C Concentrated NHO3
D Concentrated HCl
Reaction of nitric acid and sulphuric acid with phosphate rock produces
A Nitrophosphate
B Diammonium phosphate
C Tricresyl phosphate
D Tributyl phosphate
Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium
A Carbonate
B Phosphate
C Bicarbonate
D Silicate
Reaction of dilute sulphuric acid with phosphate rock produces
A Phosphoric acid
B Superphosphate
C Triple superphosphate
D Gypsum
Reaction of orthophosphoric acid with phosphate rock produces
A Superphosphate
B Triple superphosphate
C Metaphosphoric acid
D Monoammonium phosphate
Reaction of __________ acid with phosphate rock produces superphosphates.
A Hydrochloric
B Sulphuric
C Nitric
D Phosphoric
K produces 100 parts twice as fast as G does. G produces 100 parts in 40 minutes. If each produces parts at a constant rate, how many parts will K produces in 6 minutes.
A 30
B 25
C 20
D 15
Heating a mixture of phosphate rock, coke and sand in an electric furnace produces
A Phosphoric acid
B Ammonium phosphate
C Phosphorous
D Superphosphate

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