Hamad Fertilizer Technology 02/05/2021 A. A mixture of K2CO3 and As2O3 B. K2SO4 C. A mixture of Na2CO3 and As2O3 D. Na2SO4 Related Mcqs: Maximum nitrogen percentage is in________________?A. Ammonium sulphate B. Calcium ammonium nitrate C. Urea D. Liquid ammonia... HPO3 is the chemical formula of ______________ phosphoric acid?A. Pyro B. Ortho C. Meta D. None of these... Red phosphorous is changed into white phosphorous by______________________?A. Heating in presence of light B. Melting under pressure C. Vaporisation followed by condensation D. None of these... Biuret formation in urea is kept at minimum (< 1 %), because it is___________________?A. Corrosive in nature B. Toxic and harmful to some crops C. Helpful in decomposition of urea D. Explosive in nature... Reaction of phosphate rock with 98% H2SO4 produces ______________________?A. Ortho-phosphoric acid B. Superphosphate C. White phosphorous D. None of these...
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