Chemical formula of meta-phosphoric acid is ___________________?
(A) H3PO4
(B) H4P2O7
(C) HPO3
(D) Same as that of Pyrophosphoric acid
Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition _______________?
(A) Electrolysis of water
(B) Cryogenic removal of H2 from coke oven gas
(C) Steam reforming of naphtha
(D) Natural gas cracking
A nitrogenous fertiliser contains 20% N2. It could be_________________?
(A) Ammonium nitrate
(B) Calcium ammonium nitrate (CAN)
(C) Urea
(D) Ammonium chloride
Raw materials required for the production of CAN (Calcium ammonium nitrate) is NH3__________________?
(A) HNO3 & limestone
(B) CO2 & H2SO4
(C) HNO3 & NH4Cl
(D) CO2 & KNO3
Which of the following is not a mixed fertiliser ?
(A) Nitrophosphate
(B) Calcium ammonium nitrate (CAN)
(C) Ammonium phosphate
(D) None of these
Flushing liquor used for cooling coke oven gas constitutes of __________________?
(A) Ammoniacal liquor
(B) K2CO3 solution
(C) Dilute H2SO4
(D) Dilute HCl
On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because __________________?
(A) Of clotting of blood
(B) Of jamming of respiratory tract
(C) It forms carboxyhemoglobin by combining with haemoglobin of blood, thereby making it incapable of absorbing oxygen
(D) It forms CO2 by combining with oxygen present in the blood
There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant ?
(A) Mercury
(B) Arsenic
(C) Aluminium
(D) Lead
Oxidation of ammonia is________________?
(A) Exothermic
(B) Endothermic
(C) Non-catalytic
(D) Autocatalytic
In the manufacture of H3 PO4 (ortho); strong H2 SO4 leaching wet process as compared to electric furnace process___________________?
(A) Uses lower grade phosphate rock
(B) Requires lower capital investment in the plant
(C) Produces lower purity acid
(D) Is very costly