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.Management Sciences
Category: Chemical Process
Most widely and commonly used coagulant for the removal of suspended impurities in water is __________________?
A. Bleaching powder
B. Slaked lime
C. Alum
D. Copper sulphate
Which of the following is an unsaturated fatty acid ?
A. Lauric acid
B. Palmitic acid
C. Stearic acid
D. Oleic acid
Dacron is a/an _________________?
A. Polyester
B. Unsaturated polyester
C. Polyamide
D. Inorganic polymer
Graphite is a/an________________________?
A. Electrical insulator
B. Allotrope of carbon
C. Moderator used in nuclear reactor
D. Both B. and C.
Carboxymethyl cellulose (CMC) is added in detergents to act as a/an___________________?
A. Surfactant
B. Builder
C. Optical brightening agent
D. Anti soil redeposition agent
Frasch process is for______________________?
A. Making oxygen
B. Producing helium
C. Mining sulphur
D. Making nitrogen
______________ process is used for the manufacture of sodium carbonate by ammonia soda process?
A. Ostwald’s
B. Bosch
C. Solvay
D. Haber’s
Process conditions in fermentator used for production of penicillin is____________________?
A. 25°C, 2 atm
B. 50°C, l0 atm
C. 30°C, 200 mm Hg (absolute)
D. 90°C, 45 atm
Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4 + 4H2, is not practised, as it is __________________?
A. A slow reaction
B. A discontinuous reaction (requiring regeneration of iron by water gas intermittently)
C. Still in development stage (by employing fluidised bed technique)
D. All A , B. and C
______________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace?
A. Bauxite
B. Limestone
C. Quartz
D. Manganese
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