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.Management Sciences
Category: Chemical Environmental Engineering
Inhalation of silica dust by human being causes ___________________?
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A. Asphyxiation
B. Shortness of breath
C. Tuberculosis
D. Both B. & C.
In the context of the chemical process industries, the term BOD is normally associated with the_____________________?
A. Characterisation of solid wastes
B. Organic concentration in gaseous effluents
C. Characterisation of liquid effluents
D. Characterisation of boiler feed water
Siderosis is a disease caused by the inhalation of ______________ dust?
A. Coal
B. Silica
C. Iron
D. None of these
Most of the atmospheric air pollutants are present in large quantity in__________________?
A. Stratosphere
B. Thermosphere
C. Troposphere
D. Mesosphere
Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundries causes___________________?
A. Asphyxiation (suffocation)
B. Shortness of breath
C. Tuberculosis
D. All A., B. and C.
Inorganic impurities causing water pollution is ____________________?
A. Fats
B. Carbohydrates
C. Salts of metals
D. Protein
Ethanolamine is an absorbent used for the removal of _____________ from air/gas?
A. HF
B. SO2
C. H2S
D. Both B. & C.
The widest explosive limit is of _____________, thereby making it the most explosive gas?
A. Acetylene
B. Petrol vapor
C. Hydrogen
D. Carbon monoxide
5-200 μm size particles are called__________________?
A. Colloids or aerosols
B. Powder
C. Dust
D. Smoke
TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes_________________?
A. Skin disorder
B. Bronchitis
C. Bone disease
D. Cancer
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