A. Tanneries
B. Glass & ceramic
C. Beverages
D. Any of these
Arsenic pollutant is not generated in _______________ industries? Read More »
Chemical Environmental Engineering A. Grinding
B. Machining
C. Cutting
D. Polishing
A. CO
B. CO2
C. NO
D. Hydrocarbons
Main pollutant present in automobile exhaust is_________________? Read More »
Chemical Environmental Engineering A. Preheating of feed water
B. Reduction in hardness, silica & alumina in feed water
C. Keeg the pH value of feed water just below 7
D. Eliminating H2S in feed water
Scale formation in boiler is controlled by____________________? Read More »
Chemical Environmental Engineering A. 120
B. 140
C. 170
D. 200
A. Turbidity
B. Disease
C. Bad odour
D. Bad taste & colour
Presence of bacteria in potable (drinking) water causes_________________? Read More »
Chemical Environmental Engineering A. 0.1
B. 25
C. 100
D. 1000
TLV of ozone (O3) and phosgene (COCl2) in air is _______________ ppm? Read More »
Chemical Environmental Engineering A. Biological oxygen treatment
B. Coagulation and filtration
C. Adsorption in ion exchange materials
D. None of these
A. Silica gel
B. Active carbon
C. Bog iron
D. Limestone powder
H2S present in gaseous stream can be removed by adsorption on _____________________? Read More »
Chemical Environmental Engineering A. 1
B. 10
C. 250
D. 1000
Maximum permissible turbidity in potable water is _____________ ppm? Read More »
Chemical Environmental Engineering