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.Management Sciences
Category: Chemical Environmental Engineering
Exposure to chemicals having carcinogenic properties cause ____________________?
A. Dermatitis (skin disorder)
B. Cancer
C. Asphyxiation (suffocation)
D. Asthma
The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the ________________?
A. Catalytic conversion
B. Green house effect
C. Global warming
D. Both B. and C.
Which of the following is the most lethal water pollutant ?
A. Phenol and cyanide
B. Chlorine
C. Alkalis
D. Suspended solids
TLV of aldrin in public water supply system is about ____________ μg/litre?
A. 0.5
B. 17
C. 357
D. 1097
Presence of a certain minimum quantity of fluorine is desirable in potable water to prevent___________________?
A. Dental cavities
B. Scale formation
C. Water-borne disease
D. Corrosion
Direct reaction of unsaturated hydrocarbons with either NO or NO2 produces an eye irritating pollutant compound known as________________?
A. Photochemical smog
B. Peroxyacetyl nitrate (PAN) or methyl nitrite
C. Benzopyrene
D. Polyacrylonitrile
Soluble silica present in boiler feed water can be removed by______________________?
A. Coagulation
B. Filtration
C. Anion exchanger
D. Preheating it
Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyll and haemoglobin breakdown of some animals, beyond TLV (>50 ppm) ?
A. Acts as a green house gas thereby raising earth’s temperature
B. Causes asphyxia
C. Causes increase in sea level
D. Enhances the green house effect
A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of _____________ high above earth’s atmosphere, which absorbs it?
A. Hydrogen
B. Carbon dioxide
C. Ozone
D. None of these
Green house effect is accentuated by________________?
A. Deforestation
B. Rapid industrialisation
C. Increased transportation activity
D. All A., B. and C.
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