Chemical Engineering MCQs

6108 MCQs  (Page 113 of 611)

Phosphate rock is a raw material for the manufacture of____________________?
A. Phosphoric acid
B. Phosphorous
C. Superphosphates
D. All a , b. and c
Phosphoric acid is prepared from_____________________?
A. Cryolite
B. Chalcopyrite
C. Rock phosphate
D. None of these
Kaolin is a/an _____________________?
A. Refractory material
B. Synthetic resin
C. Artificial abrasive
D. Blue pigment
Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda ?
A. High cost of mercury
B. High specific gravity of mercury
C. Non-availability of high purity mercury
D. Pollution of water stream by mercury
Builders are added in soap to act as___________________?
A. Cleaning power booster
B. Anti-redeposition agent
C. Corrosion inhibitor
D. Fabric brightener
Mercury cells for caustic soda manufacture, compared to diaphragm cells___________________?
A. Require lower initial investment
B. Require more power
C. Produce lower concentration naoh
D. None of these
Viscose rayon is chemically___________________?
A. Cellulose nitrate
B. Regenerated cellulose nitrate
C. Cellulose acetate
D. Regenerated cellulose acetate