A. Blue vitriol
B. Gypsum
C. Calcium silicate
D. Calcium sulphate
Heating of _______________ to 120°C, produces plaster of paris ? Read More »
Chemical Process A. Rosin
B. Borax
C. Benzyl acetate
D. Sodium carbonate
Which of the following is used as a binding material in soap to improve soap texture ? Read More »
Chemical Process A. Na2SO4.10H2O
B. CaCl(OCl)
C. CaSO4.H2O
D. (NH4)2SO4
Glauber’s salt is chemically represented by____________________? Read More »
Chemical Process A. Gypsum
B. Silicates
C. Sodium silicate
D. Carbonates
Main constituents of Portland cement are calcium aluminate and__________________? Read More »
Chemical Process A. Permit the use of alum as a coagulant
B. Increase the softening capacity of zeolite
C. Facilitate easy regeneration of zeolite
D. All A , B. and C.
The purpose of adding Na2CO3 to water of low alkalinity is to__________________? Read More »
Chemical Process A. Brine
B. Chloramines
C. Sodium bisulphite
D. Liquid chlorines
A. Quicklime
B. Slaked lime
C. Milk of lime
D. None of these
The product obtained on mixing calcium oxide with water is called __________________? Read More »
Chemical Process A. Xanthates
B. Stearic acid
C. Calcium & aluminium stearate
D. Formic acid
A. Hard
B. Soft
C. Metallic
D. Lubricating
A. Decreases with decrease of thickness of the flakes
B. Increases with the increasing flake size keeg the flake thickness constant
C. Increases considerably with the rise of temperature
D. Decreases as the moisture content of flakes increases
