A. Ammonium phosphate
B. Flour apatite
C. Calcium fluoride
D. Calcium phosphate
Correct Answer: Flour apatite ✔
Last Updated: March 11, 2019
Related MCQs
- Gas based fertiliser plants use__________?
- Chemical formula of meta-phosphoric acid is __________?
- Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition __________?
- A nitrogenous fertiliser contains 20% N2. It could be__________?
- Raw materials required for the production of CAN (Calcium ammonium nitrate) is NH3__________?
- Leaching of phosphate rock by strong __________ acid produces phosphoric acid ?
- Which of the following is not a mixed fertiliser ?
- Flushing liquor used for cooling coke oven gas constitutes of __________?
- Nitrogen content in ammonium sulphate (a fertiliser) is around __________ percent?
- Dehydration of ammonium carbamate to yield urea is a/an __________ reaction?
- Both white phosphorous as well as red phosphorous__________?
- Which of the following fertilisers is required for the development of fibrous materials of the plants and of the sugar of vegetable & fruits ?
- Prilling tower is found in the flowsheet for the manufacture of__________?
- Heating of ortho-phosphoric acid to about 900°C, produces__________?
- Ammonium nitrate (a fertiliser) is coated with limestone powder to __________?
- Main component of bone ash is __________?
- 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 ?
- Reaction of calcium Fluorapatite with sulphuric acid produces __________?
- Ammonia synthesis gas is produced from fuel oil by __________?
- Vetrocoke solution is__________?
- In __________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed?
- Which of the following nitrogenous fertilisers has the highest percentage of nitrogen ?
- Superphosphate is manufactured by reacting phosphate rock with__________?
- In an ammonia plant, the purge off is essential to__________?
- Ammonia synthesis gas is produced from natural gas by__________?
- Chemical formula of biuret is__________?
- Heating of ortho-phosphoric acid to 250°C produces__________?
- Potassic fertilisers do not promote the development of __________?
- The main constituent of rock phosphate is __________?
- Base suspension fertiliser essentially contains__________?
- Fertiliser value of a nitrogenous fertiliser is expressed in terms of its __________ content?
- Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature__________?
- Triple superphosphate which contains about 46% P2O5 is produced by the reaction of phosphate rock with ortho phosphoric acid of__________ percent concentration?
- Vapor phase reaction of ammonia & nitric acid to produce ammonium nitrate is termed as the __________ process?
- Triple superphosphate is chemically represented as__________?
- Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an __________ reaction?
- Reaction of dilute sulphuric acid with phosphate rock produces __________?
- Reaction of phosphate rock with 98% H2SO4 produces __________?
- Ammonium phosphate is a __________ fertiliser?
- Nitrolime is chemically known as__________?
- H3PO4 is the chemical formula of __________ phosphoric acid?
- Catalyst used in the oxidation of ammonia is __________?
- Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant ?
- In the manufacture of urea, the intermediate chemical formed is__________?
- Catalyst used in Haber’s process for ammonia production is__________?
- P2O5 percentage in the phosphoric acid produced by wet process is about__________?
- CO2 present in reformed gas (obtained by steam reforming of naphtha) is removed by absorbing in __________?
- The essential ingredient of all the synthesis gas is__________?
- Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the__________?
- During conversion of ammonium carbamate into urea, presence of large excess of water__________?
- Coal based fertiliser plants at Ramagundam (Andhra Pradesh) and Talcher (Orissa) ?