A. Respiratory & lung disease
B. Reduction in plant’s productivity owing to acid rain
C. Corrosion of building materials
D. All A., B. and C.
A. Benzopyrene
B. Peroxyacetyl nitrate
C. Carbon monoxide
D. Sulphur dioxide
A. 1 to 1.5
B. 6.5 to 8
C. 13 to 14
D. 4 to 5
The pH value of potable water should be between____________________? Read More »
Chemical Environmental Engineering A. Thermal power plant
B. Petroleum refinery
C. Nitric acid plant
D. Sulphuric acid plant
Which of the following plants does not emit appreciable amount of SO2 in atmosphere ? Read More »
Chemical Environmental Engineering A. Using the activities of bacteria and other micro organisms
B. Aerobic oxidation
C. Both A. & B.
D. Neither A. nor B.
A. Low amount of excess combustion air
B. Large quantity of excess combustion air
C. Hydrocarbon fuel
D. Pulverised coal as fuel
A. Methemoglobinemia
B. Gastroenteritis
C. Asphyxiation
D. Tooth decay
Presence of nitrates in water in excess of 50 ppm causes________________? Read More »
Chemical Environmental Engineering A. Packed scrubber
B. Gravity settling chamber
C. Electrostatic precipitator
D. Hydrocyclone
A. HF
B. SO2
C. H2S
D. Both B. & C.
Ethanolamine is an absorbent used for the removal of _____________ from air/gas? Read More »
Chemical Environmental Engineering A. 5
B. 50
C. 2000
D. 5000
Threshold limit value (TLV) of CO in air is _____________ ppm? Read More »
Chemical Environmental Engineering