Fertiliser Technology - Study Mode
[#41] Sodium tri poly phosphate (STPP) is chemically represented as
Correct Answer
(A) Na 5 P 3 O 10
[#42] Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.
Correct Answer
(D) All of the above
[#43] Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ °C in absence of air.
Correct Answer
(B) 250-400
[#44] __________ is not a fertiliser.
Correct Answer
(B) Ferrous sulphate
[#45] Formation of ammonium carbamate by reaction of NH 3 with CO 2 is a/an __________ reaction.
Correct Answer
(B) Exothermic