A. Pt
B. K2O
C. Al2O3
D. Ni
Correct Answer: K2O ✔
Last Updated: March 11, 2019
Related MCQs
- A fertiliser plant is classified as a gas based fertiliser plant, when it uses __________ gas as a source of hydrogen for the manufacture of ammonia?
- Commercial fertilisers are available mostly in the form of__________?
- Nitrogenous fertiliser is required__________?
- Ammonia synthesis reaction is__________?
- 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?
- (CH3 C6 H4)3 PO4 is the chemical formula of__________?
- HPO3 is the chemical formula of __________ phosphoric acid?
- Reaction of __________ acid with phosphate rock produces superphosphates?
- Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ °C in absence of air?
- Which of the following gasifiers can be attached to coal based fertiliser plants ?
- Phosphatic fertiliser is graded based on its __________ content?
- Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N2 & H2 is high. The presence of promoter along with the catalyst helps in __________ of the catalyst ?
- Naphtha in a fertiliser plant is used as a source of__________?
- Low grade phosphate rock can be used in electrical furnace, because__________?
- Commercial production of hydrogen for the manufacture of nitrogenous fertilisers is done by__________?
- Reaction of Cresylic acid with __________ produces Tricresyl phosphate?
- Phosphorus vapour comprises of __________?
- __________ is the most suitable fertiliser for paddy?
- A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous?
- Urea is formed only__________?
- Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis ?
- Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium__________?
- Montecatini process is used for the manufacture of__________?
- Bio-fertilisers are cheaper, renewable and pollution free. They improve the __________ of the soil?
- Lower temperature and large excess of ammonia in urea melt__________?
- Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of__________?
- The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent?
- Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done?
- Which of the following is not a measure component necessarily to be present in fertilisers ?
- Fertiliser plants get their N2 requirements __________?
- Maximum nitrogen percentage is in__________?
- An increase in the NH3/CO2 ratio in urea manufacture results in__________?
- Electric furnace method for production of phosphorous uses phosphate rock and __________?
- Urea is a better fertilizer than ammonium sulphate, because__________?
- Conditioners like finely divided peat are added to the fertiliser to__________?
- Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas ?
- Color of nitric acid is light yellow due to the presence of__________?
- Catalyst used in steam reforming of naphtha is__________?
- Steam reforming of naphtha produces ammonia synthesis gas. This is a/an __________ process?
- Multistage operation (as in the case of catalytic oxidation of SO2) is not carried out for NH3 synthesis, because of__________?
- Nitrolime is__________?
- Tricresyl phosphate is chemically represented as__________?
- Ammonium nitrate is__________?
- __________ catalyst is used in the production of urea from CO2 and NH3?
- Triple superphosphate is made by reacting phosphate rock with __________ acid?
- The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is __________ fertiliser?
- Which one of the following is used as a nitrogenous fertiliser, as a weed killer in the onion fields and for correcting acidic soils ?
- Catalytic ammonia synthesis reaction as in Haber’s process is__________?
- H4P2O7 is the chemical formula of __________ phosphoric acid?
- -10-5 fertilisers mean that they contain__________?
- Reaction of anhydrous liquid ammonia with ortho-phosphoric acid produces__________?