A. Chloro-alkali industry
B. Tanneries
C. Beverage plant
D. Phosphoric acid plant
Which of the following industries discharge mercury as a pollutant ? Read More »
Chemical Environmental Engineering A. Dissolved oxygen content
B. Biological oxygen demand
C. Vapor pressure
D. All A., B. and C.
A. Phenol and cyanide
B. Chlorine
C. Alkalis
D. Suspended solids
Which of the following is the most lethal water pollutant ? Read More »
Chemical Environmental Engineering A. Wet scrubber
B. Bag filter
C. Electrostatic precipitators
D. Dust catcher
A. Aerobic
B. Pathogenic
C. Anaerobic
D. Non-pathogenic
Presence of _____________ bacteria in water causes disease like typhoid? Read More »
Chemical Environmental Engineering A. 10
B. 90
C. 800
D. 750
A. 0.002
B. 0.2
C. 1.2
D. 4.8
A. Carbon dioxide
B. Toluene
C. Carbon disulphide
D. Acetaldehyde
Out of the following, TLV of _______________ is maximum (about 500 ppm)? Read More »
Chemical Environmental Engineering A. Grit chamber
B. Detritus tank
C. Trickling filter
D. Skimming tank
Fine grit present in sewage is removed in the _____________ during sewage treatment? Read More »
Chemical Environmental Engineering A. Deaeration of feed water
B. Enhancing pH of feed water by adding alkali
C. Feeding sodium sulphite or hydrazine phosphate to the boilers, which combines with oxygen
and prevents corrosion
D. All A., B. and C.
Corrosion in boilers can be prevented by _________________? Read More »
Chemical Environmental Engineering