Chemical Engineering MCQs

6108 MCQs  (Page 139 of 611)

Which oil is preferred for paint manufacture ?
A. Drying oil
B. Non-drying oil
C. Semi-drying oil
Pick out the wrong statement pertaining to nitric acid ?
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
Tall oil obtained as a by-product from the black liquor recovery is________________?
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.
Which of the following, when pyrolysed, produces Perchloroethylene ?
A. Ethylene dichloride
B. Chlorobenzene
C. Carbon tetrachloride
D. Chlorinated paraffin
Pick out the exothermic reaction out of the following ?
A. C + h2o = co + h2
B. Cac2 + h2o = ca(oh)2 + c2h2
C. Mgco3 = mgo + co2
D. All (a), b. and (c)
Concentration of hydrogen peroxide is done by_____________________?
A. Crystallisation
B. Vacuum crystallisation
C. Atmospheric distillation
D. Dehydration
Bakelite is chemically known as_____________________?
A. Polyvinyl chloride (pvc)
B. Polybutadiene
C. Phenol formaldehyde
D. Polyurethane