Increases the yield of urea
Adversely affects the yield of urea
Reduces the evaporator load by diluting the urea solution
Does not affect the yield of urea
✅ The correct answer is option B.
Chemical Engineering MCQs
Phosphorus vapour comprises of
P
P₂
P₃
P₄
✅ The correct answer is option D.
In the manufacture of H₃ PO₄ (ortho), ; strong H₂ SO₄ leaching wet process as compared to electric furnace process
Uses lower grade phosphate rock
Requires lower capital investment in the plant
Produces lower purity acid
Is very costly
✅ The correct answer is option C.
Potassic fertilisers do not promote the development of
Stems & leaves during early stage of plant growth
Starches of potatoes & grains
Sugar of fruits & vegetables
Fibrous materials of plants
✅ The correct answer is option A.
Catalyst used in ammonia synthesis uses __________ as a promoter.
Pt
K₂O
Al2O₃
Ni
✅ The correct answer is option B.
Steam reforming of naphtha is a source of hydrogen production for nitrogeneous fertiliser industry. What is the usual ratio of steam to carbon maintained in the process of steam reforming of naphtha?
1.5:1
3.5:1
10:01
15:01
✅ The correct answer is option B.
Low grade phosphate rock can be used in electrical furnace, because
Of the better CaO/SiO₂ balance for slag formation
CaO content is less
It is cheap
It produces low cost product
✅ The correct answer is option A.
__________ is the undesirable by-product produced in the manufacture of urea.
Ammonium carbonate
Biuret
Carbon dioxide
Ammonium carbamate
✅ The correct answer is option B.
Nitric acid is produced on commercial scale in a fertiliser plant by
Oxidation of ammonia
CaNO₃ + H₂SO₄ reaction
Passing air through high voltage electric arc
None of these
✅ The correct answer is option A.
Oxidation of ammonia is
Exothermic
Endothermic
Non-catalytic
Autocatalytic
✅ The correct answer is option A.