Chemical Engineering MCQs

6108 MCQs  (Page 100 of 611)

Attempt Chemical Engineering Quiz
One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to_________________?
A. Adjust the ph of the syrup
B. Remove the coloring matter from the syrup
C. Reduce the viscosity of the syrup
D. Improve the rate of crystallisation of sugar
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Plasticisers are added to synthetic plastics to____________________?
A. Impart flexibility
B. Improve workability during fabrication
C. Develop new improved properties not present in the original resins
D. All a, b. and c.
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Celluloid is chemically___________________?
A. Cellulose acetate
B. Regenerated cellulose
C. Cellulose nitrate
D. Cellulose acetate butyrate
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Permanent hardness of water can be removed by___________________?
A. Boiling
B. Adding ca(oh)2
C. Boiling it with na2co3
D. None of these
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Viscose rayon is__________________?
A. Cellulose nitrate
B. Regenerated cellulose nitrate
C. Regenerated cellulose acetate
D. None of these
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Nitric acid is not used in the manufacture of______________________?
A. Detergents
B. Fertilisers
C. Aqua regia
D. Explosives
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Sea water contains about ______________________ ppm of bromine ?
A. 5
B. 70
C. 500
D. 1700
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Teflon is___________________?
A. Phenol formaldehyde
B. An inorganic polymer
C. Poly tetra-fluoro-ethylene (p.t.f.e.)
D. A monomer
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In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because___________________?
A. So3 gas is sparingly soluble in water
B. Water forms an acid mist, which is difficult to absorb
C. The purity of acid is affected
D. Scale formation in the absorber is to be avoided
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Carbon disulphide is mainly used in the production of______________________?
A. Viscose rayon
B. Corundum
C. Plasticiser for unsaturated polyester
D. Paints
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Word of the Day
25 Jul
January
a preference or special liking for something; a bias in favour of something.
2021:00:00

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