51. __________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia.
Solvay
Ostwald’s
Haber’s
None of these
✅ The correct answer is option B.
Chemical Process MCQs
52. Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it
Has larger production capacity per unit cell
Consumes less power per ton of Cl₂ produced
Produces high purity (70%) caustic soda directly
All of the above
✅ The correct answer is option D.
53. __________ is not a constituent of gun powder.
Carbon
Charcoal
Sulphur
Potassium nitrate
✅ The correct answer is option A.
54. Use of hydrated lime in water treatment
Before filtration, reduces the bacterial load on filters
After filtration, combats the corrosive-ness of water due to the presence of O₂ & CO₂
Is to adjust the pH value
All of the above
✅ The correct answer is option D.
55. Which of the following is the second major component of cement?
Al₂O₃
SiO₂
CaO
Fe₂O₃
✅ The correct answer is option B.
56. Synthesis gas is a mixture of
CO and H₂
N₂ and H₂
H₂, CH₄ and CO
CO₂ and H₂
✅ The correct answer is option A.
57. Esterification reaction produces
Detergent
Vanaspati
Soap
Mercaptans
✅ The correct answer is option C.
59. Prussian blue is chemically represented by
FeO.TiO₂
Ca SO₄ . 2H₂O
Fe₄ [Fe (CN₆)₃]
AlF₃ . 3NaF
✅ The correct answer is option C.
60. Most commonly used rubber vulcanising agent is
Sulphur
Bromine
Platinum
Alumina
✅ The correct answer is option A.