Crystallisation
Vacuum crystallisation
Atmospheric distillation
Dehydration
✅ The correct answer is option B.
Chemical Process MCQs
442. Economics of ‘Solvay Process’ depends upon the efficiency of
Carbonating tower
Ammonia recovery
Ammonia recovery and size of the plant
Ammoniation of salt solution
✅ The correct answer is option C.
443. The major use of butadiene is
As a plasticiser for unsaturated polyester
In the manufacture of synthetic rubber
As an anti-skinning agent in paint
None of these
✅ The correct answer is option B.
444. Hydrodenation of vegetable oils is a/an __________ reaction.
Endothermic
Autocatalytic
Exothermic
Homogenous
✅ The correct answer is option C.
445. Poly Vinyl Chloride (P.V.C.) is a __________ material.
Thermosetting
Thermoplastic
Fibrous
Chemically active
✅ The correct answer is option B.
446. Which of the following is not an insecticide?
Hydrocyanic acid
Nicotine
Sodium flouride
Hexane
✅ The correct answer is option D.
447. Carbon disulphide is mainly used in the production of
Viscose rayon
Corundum
Plasticiser for unsaturated polyester
Paints
✅ The correct answer is option A.
448. Type of glass used in optical work is the __________ glass.
Soda-lime
Fibre
Lead
Borosilicate
✅ The correct answer is option C.
449. Dacron is a/an
Polyester
Unsaturated polyster
Polyamide
Inorganic polymer
✅ The correct answer is option A.
450. Helium is produced on commercial scale from
Air
Natural gas
Coke oven gas
None of these
✅ The correct answer is option B.