81. Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the
Fertiliser manufacture
Car battery solution
Synthesis of oleum
Water treatment
✅ The correct answer is option B.
Chemical Process MCQs
82. Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre.
Cutting
Fibrillation
Hydration
Strengthening
✅ The correct answer is option D.
83. Fermentation is adversely affected by the
Presence of air
Absence of air
High concentration
Presence of ammonium salts
✅ The correct answer is option C.
84. __________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.
Chlorine
Ammonium chloride
Sodium carbonate
Sodium bi-carbonate
✅ The correct answer is option A.
85. Fermentation of molasses to produce ethyl alcohol is done at __________ °C
20 – 30
< - 5
100 – 150
250 – 300
✅ The correct answer is option A.
86. Hydrazine is used in water treatment for the removal of
Colloidal impurities
Dissolved oxygen
Turbidity
Chlorinous taste
✅ The correct answer is option B.
87. Direct conversion of chemical energy into electrical energy is done in a
Magnetohydrodynamic (MHD) generator
Fuel cell
Fast breeder reactor
None of these
✅ The correct answer is option B.
88. Sodium chloride content in sea water is about __________ gms/litre.
2
10
25
50
✅ The correct answer is option C.
89. The most economical pulp for the production of newsprint would be the __________ pulp.
Groundwood
Sulphate
Sulphite
Semichemical
✅ The correct answer is option A.
90. The noble gas which occurs most abundantly in the atmosphere is
Helium
Neon
Krypton
Argon
✅ The correct answer is option D.