451. Lithopaneis
Explosive
White lead
Filter aid
ZnS (white pigment)
✅ The correct answer is option D.
Chemical Process MCQs
453. Rosin soap is added during paper manufacture to
Impart adhesive properties
Improve opacity
Impart resistance to penetration by liquids
None of these
✅ The correct answer is option C.
454. A cane sugar factory having sugar production rate of 10 tons/day will produce about __________ tons/day of bagasse (after consumption by the factory for heating etc.).
1
10
25
40
✅ The correct answer is option B.
456. __________ is used as a catalyst in fat splitting.
ZnO
Ni
V₂O₅
FeO
✅ The correct answer is option A.
457. Bio-degradable detergents
Can be readily oxidised
Pose problem in sewerage plant
Have an isoparaffinic structure
Should not be used as it spoils the cloth
✅ The correct answer is option A.
458. The purpose of tanning in leather industry is to
Stiffen the leather
Smoothen the leather
Make it flexible
Impart water resistance
✅ The correct answer is option A.
459. Paper pulp produced by kraft/sulphate process is
Bleached easily
Dull white in color
Strong fibrous
Dark colored
✅ The correct answer is option C.
460. Production of alcohol by fermentation of molasses is an __________ process.
Anaerobic
Aerobic
Endothermic
Both B and C
✅ The correct answer is option B.