Chemical Engineering - Fertiliser Technology
Exercise :: Fertiliser Technology - Section 1
36.
P2 O5 content in triple superphosphate is about __________ percent.
Answer: Option A
Explanation:
37.
H3 PO4 is the chemical formula of __________ phosphoric acid.
Answer: Option B
Explanation:
38.
Heating of orthophosphoric acid to 250°C produces
A. metaphosphoric acid B. pyrophosphoric acid C. no change in it D. none of these
Answer: Option B
Explanation:
39.
Vapor phase reaction of ammonia & nitric acid to produce ammonium nitrate is termed as the __________ process.
A. Haber's B. Stengel C. Le-chatlier's D. Du-pont's
Answer: Option B
Explanation:
40.
Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N2 & H2 is high. The presence of promoter along with the catalyst helps in __________ of the catalyst.
A. stabilisation B. increasing the effectiveness C. improving the strength & heat resistance D. all a, b & c
Answer: Option D
Explanation:
