Ammonia synthesis reaction is______________________?
(A) Exothermic
(B) Endothermic
(C) Autocatalytic
(D) None of these
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?
(A) 38
(B) 68
(C) 82
(D) 98
(CH3 C6 H4)3 PO4 is the chemical formula of__________________?
(A) Triple superphosphate
(B) Tricresyl phosphate
(C) Fluorapatite
(D) Superphosphate
HPO3 is the chemical formula of ______________ phosphoric acid?
(A) Pyro
(B) Ortho
(C) Meta
(D) None of these
Reaction of ______________ acid with phosphate rock produces superphosphates?
(A) Hydrochloric
(B) Sulphuric
(C) Nitric
(D) Phosphoric
Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at ____________ °C in absence of air?
(A) 50-80
(B) 250-400
(C) 1000-1200
(D) 800-900
Which of the following gasifiers can be attached to coal based fertiliser plants ?
(A) Lurgi (high pressure) gasifier
(B) Kopper-Totzek gasifier
(C) Gasifier working at 20 atm
(D) Gasifier working at 40 atm
Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because______________________?
(A) It is hygroscopic and explosive in nature
(B) It is highly acidic in nature
(C) It is a liquid at room temperature
(D) Its nitrogen content is very less
Calcium ammonium nitrate (CAN) is__________________?
(A) A mixed fertiliser
(B) A straight fertiliser
(C) A complex fertiliser
(D) Not a fertiliser; it is an explosive