A. CaO & SiO2
B. SiO2 & Al2O3
C. CaO & Al2O3
D. CaO & Fe2O3
Portland cement consists mainly of__________________? Read More »
Chemical Process A. Act as fabric brightener (by converting ultraviolet light to visible light) thereby improving the
whiteness appearance of white fabrics
B. Attain distinctiveness from other brands
C. Act as tarnish inhibitor for metals like German silver
D. None of these
Fluorescent dyes are added in detergents to__________________? Read More »
Chemical Process A. Polystyrene
B. Polyisoprene
C. Polybutadiene
D. Polychlorophrene
Main constituents of natural rubber is____________________? Read More »
Chemical Process A. Ammonia
B. Limestone
C. Nitric acid
D. None of these
A. Glauber’s salt
B. Common salt
C. Chlorine
D. Graphite electrode
Deacon’s method is used for the manufacture of____________________? Read More »
Chemical Process A. Thinner
B. Pigment
C. Both A. & B.
D. Neither A. nor B.
Varnish does not contain_______________? Read More »
Chemical Process A. From waste sulphite substrate of paper mills
B. By Esterification and hydrolysis of ethylene
C. From molasses
D. None of these
Ethyl alcohol cannot be produced_________________? Read More »
Chemical Process A. Glucose
B. Fructose
C. Sucrose
D. Lactose
Which of the following sugars is the sweetest ? Read More »
Chemical Process A. Addition of alum (a coagulant)
B. Boiling
C. Filtration (through gravity sand filter)
D. Addition of lime
Temporary hardness of water can be removed by__________________? Read More »
Chemical Process A. Is a good adhesive
B. Is an elastomer
C. Cannot be used for surface coatings
D. Is a polyester
Epoxy resin__________________? Read More »
Chemical Process