Chemical Environmental Engineering Mcqs

Q.  ______________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant ?

a. Calcium
b. Fluorine
c. Phosphorous
d. Sulphur


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Which of the following causes death by asphyxiation, if its presence in atmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm) ?
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MCQs:  Sulphur dioxide present in the industrial chimney exhaust gases causes____________________?
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MCQs:  Corrosion in boilers can be prevented by _________________?
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MCQs:  Fine grit present in sewage is removed in the _____________ during sewage treatment?
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MCQs:  Out of the following, TLV of _______________ is maximum (about 500 ppm)?
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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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