551. Neoprene is the trade name of
Polyurathane
Phenol formaldehyde
Polychloroprene
Styrene-butadiene rubber
✅ The correct answer is option C.
Chemical Process MCQs
552. Reverse osmosis is normally used for the
Separation of isotopes of uranium from gaseous uranium hexaflouride
Separation of helium from natural gas
Desalination of brackish water to produce potable (drinking) water
Purification of oxygen
✅ The correct answer is option C.
553. Addition of calcium oxide to water produces
Exothermic heat
Hissing sound
Slaked lime
All of the above
✅ The correct answer is option D.
554. __________ glass is used for the manufacture of optical glass.
Pyrex
Soda
Flint
Crooke’s
✅ The correct answer is option C.
555. In the manufacture of viscose rayon, the raw material used industrially is
Recalyptious wood
Bamboo
Bagasse
Fine teak wood
✅ The correct answer is option D.
556. Sugar content in sugarcane on cane basis is about __________ percent by weight.
1 to 5
5 to 10
15 to 20
20 to 30
✅ The correct answer is option B.
557. Zeolite is used in the
Water treatment
Glass manufacture
Hydrogenation of fatty oil as a catalyst
Development of exposed photographic plate
✅ The correct answer is option A.
558. Naphthalene is removed from coke oven gas by
Adsorbing on palladium
Absorbing in ethanolamine
Scrubbing with wash oil
Passing it through electrostatic precipitator
✅ The correct answer is option C.
559. Sizing material is incorporated in paper to
Impart resistance to penetration by liquids
Increase its thickness
Increase its flexibility & opacity
Increase its brightness
✅ The correct answer is option A.
560. Which of the following processes can remove both temporary as well as permanent hardness of water?
Filtration
Boiling
Distillation
None of these
✅ The correct answer is option C.