Ammonium nitrate is___________________?
(A) Having about 40% N2
(B) Not hygroscopic
(C) Not prone to explosive thermal decomposition
(D) Mixed with limestone powder to reduce its explosive nature before using it as a fertilizer
____________ catalyst is used in the production of urea from CO2 and NH3?
(A) Vanadium pentoxide
(B) No
(C) Alumina
(D) Nickel
Triple superphosphate is made by reacting phosphate rock with _____________ acid?
(A) Phosphoric
(B) Nitric
(C) Sulphuric
(D) Hydrochloric
The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is _____________ fertiliser?
(A) Nitrogenous
(B) Phosphatic
(C) Potassic
(D) None of these
Which one of the following is used as a nitrogenous fertiliser, as a weed killer in the onion fields and for correcting acidic soils ?
(A) Urea
(B) CAN
(C) Ammonium sulphate
(D) Calcium cyanamide
Catalytic ammonia synthesis reaction as in Haber’s process is_________________?
(A) Endothermic
(B) Exothermic
(C) Irreversible
(D) None of these
H4P2O7 is the chemical formula of _____________ phosphoric acid?
(A) Pyro
(B) Ortho
(C) Meta
(D) None of these
Maximum nitrogen percentage is in________________?
(A) Ammonium sulphate
(B) Calcium ammonium nitrate
(C) Urea
(D) Liquid ammonia
An increase in the NH3/CO2 ratio in urea manufacture results in__________________?
(A) Increased degree of conversion of CO2 to urea
(B) Decreased degree of conversion of NH3 to urea
(C) Decreased yield of urea
(D) Decreased specific volume of molten mass
Electric furnace method for production of phosphorous uses phosphate rock and _________________________?
(A) Phosphoric acid
(B) Coke
(C) Sulphuric acid
(D) Silica and coke