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.Management Sciences
Category: Chemical Process
Raw materials used for producing ________________ cement does not contain iron oxide?
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A. Waterproof
B. Slag
C. White
D. Pozzolan
Neoprene is chemically known as___________________?
A. Polybutadiene
B. Styrene butadiene rubber (SBR)
C. Polyurethane
D. Polychlorophrene
Concentration of sulphide ores is done usually by____________________?
A. Roasting
B. Smelting
C. Froth floatation
D. Electromagnetic separation
Zeolite used in water softening process (cation exchange) is regenerated by washing with___________________?
A. Brine
B. Chloramines
C. Sodium bisulphite
D. Liquid chlorines
Type of glass used in optical work is the ___________________ glass?
A. Soda-lime
B. Fibre
C. Lead
D. Borosilicate
Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene ?
A. AgO
B. Al2O3
C. ZnCl2
D. Fe2O3
Sulphuric acid completely saturated with sulphur trioxide is called_________________?
A. Concentrated sulphuric acid
B. Oleum
C. Sulphurous acid
D. Dilute sulphuric acid
Viscose rayon is chemically___________________?
A. Cellulose nitrate
B. Regenerated cellulose nitrate
C. Cellulose acetate
D. Regenerated cellulose acetate
______________ are added in lacquers to remove film brittleness and to improve adhereness?
A. Film forming materials
B. Plasticisers
C. Diluents
D. Solvents
Carbon tetrachloride (CCl4) is the starting raw material for the manufacture of____________________?
A. Trichloroethylene
B. Perchloroethylene
C. Parathion
D. Methanol
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