Chemical Environmental Engineering Mcqs


Q.  Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of________________?

a. CO2
b. SO2
c. Hydrocarbons
d. CFC (chloro fluoro carbon)


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about ______________ ppm (parts per million)?
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MCQs:  As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is _____________ μg/m3.(μg-microgram)?
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MCQs:  Presence of _____________ bacteria in water causes disease like typhoid?
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MCQs:  In large thermal power stations very fine particulates present in flue gas are removed by___________________?
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MCQs:  Which of the following is the most lethal water pollutant ?
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MCQs:  The detrimental effect on organism and water quality with temperature rise of aquatic system is the reduction of _____________ of water?
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MCQs:  Which of the following industries discharge mercury as a pollutant ?
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MCQs:  The Killer gas which caused Bhopal gas tragedy in 1984 was________________?
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MCQs:  Permissible safe limit (TLV) of _____________ toxic gas is 100-1000 parts per million (ppm)?
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MCQs:  The common pollutant generated in chlor-alkali industry and battery manufacture is ___________________?
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MCQs:  Deaeration of high pressure boiler feed water is done to reduce ___________________?
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MCQs:  Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters ?
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MCQs:  Beyond what concentration of H2S in air, acute danger to human life exists ?
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MCQs:  Methyl isocyanate (MIC) gas (TLV <1 ppm), which caused Bhopal gas tragedy in 1984 falls under the category of ______________ toxic gas?
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MCQs:  Carbonaceous particles having size less than 1 μm are called___________________?
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MCQs:  White smoke coming out of the chimney of a furnace indicates the use of_________________?
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MCQs:  Most efficient and suitable dust removal equipment for removal of fly-ash from flue gas in a thermal power plant is the__________________?
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MCQs:  Pick out the wrong statement pertaining to ‘green house’ for the plants ?
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MCQs:  In the context of the chemical process industries, the term BOD is normally associated with the_____________________?
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MCQs:  Iron & manganese present as pollutant in water cannot be removed by__________________?
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