A. Polyvinyl chloride (PVC)
B. Polybutadiene
C. Phenol formaldehyde
D. Polyurethane
Bakelite is chemically known as_____________________? Read More »
Chemical Process A. Crystallisation
B. Vacuum crystallisation
C. Atmospheric distillation
D. Dehydration
Concentration of hydrogen peroxide is done by_____________________? Read More »
Chemical Process A. Quick lime
B. Glauber’s salt
C. Salt petre
D. Bromine
A. Ground-wood
B. Board
C. Tissue
D. Wrapg
______________ paper is used in the manufacture of newsprint paper ? Read More »
Chemical Process A. C + H2O = CO + H2
B. CaC2 + H2O = Ca(OH)2 + C2H2
C. MgCO3 = MgO + CO2
D. All (A), B. and (C)
Pick out the exothermic reaction out of the following ? Read More »
Chemical Process A. Ethylene dichloride
B. Chlorobenzene
C. Carbon tetrachloride
D. Chlorinated paraffin
Which of the following, when pyrolysed, produces Perchloroethylene ? Read More »
Chemical Process A. Carbonates
B. Bicarbonates
C. Phosphates
D. Sulphates
Magnesium and calcium ______________ cause temporary hardness of water ? Read More »
Chemical Process A. A black, sticky & viscous liquid
B. Used in the manufacture of greases, emulsions & soaps
C. Composed mainly of rosin & fatty acids
D. All A , B. & C.
Tall oil obtained as a by-product from the black liquor recovery is________________? Read More »
Chemical Process A. About 90% of nitric acid is manufactured by Ostwald’s process
B. It is a strong mono basic acid which reacts with almost all the metals except noble metals
C. Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)
D. Arc process of nitric acid manufacture is economical as compared to Ostwald’s process
Pick out the wrong statement pertaining to nitric acid ? Read More »
Chemical Process A. Drying oil
B. Non-drying oil
C. Semi-drying oil
D. Saturated oil
Which oil is preferred for paint manufacture ? Read More »
Chemical Process