A. Corrosion
B. Sequestration
C. Scale formation
D. None of these
Use of water having dissolved oxygen in boilers promotes___________________? Read More »
Chemical Process A. Nylon-6
B. Dacron
C. Polyester
D. PVC
Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces ________________? Read More »
Chemical Process A. Low co-efficient of expansion
B. High co-efficient of expansion
C. High melting point
D. Both B. and (C)
A. Caffeine
B. Nicotine
C. Calgon
D. Lignin
Which of the following is a constituent of coffee ? Read More »
Chemical Process A. Better heat & acid resistant properties
B. Poorer resistance to alkalis
C. Poorer dyeability
D. All A , B. and C.
Dacron (or Terylene) fibres as compared to nylon fibres have__________________? Read More »
Chemical Process A. Freeze drying
B. Electrolytic
C. Solar evaporation
D. Vacuum evaporation
Common salt is generally not produced commonly by ________________ method from brine ? Read More »
Chemical Process A. 50
B. 100
C. 200
D. 300
Flash point of most vegetable oils is about _______________ °C ? Read More »
Chemical Process A. Bleaching powder
B. Slaked lime
C. Alum
D. Copper sulphate
A. Sulphate
B. Carbonate
C. Hydroxide
D. Bi-carbonate
A. 5
B. 20
C. 40
D. 60
Paper grade bamboo contains about _______________ percent cellulose ? Read More »
Chemical Process