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Chemical Environmental Engineering — Test 3

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Question 1
Which of the following is the most lethal water pollutant ?
Question 2
The detrimental effect on organism and water quality with temperature rise of aquatic system is the reduction of _____________ of water?
Question 3
Which of the following industries discharge mercury as a pollutant ?
Question 4
The Killer gas which caused Bhopal gas tragedy in 1984 was________________?
Question 5
Permissible safe limit (TLV) of _____________ toxic gas is 100-1000 parts per million (ppm)?
Question 6
The common pollutant generated in chlor-alkali industry and battery manufacture is ___________________?
Question 7
Deaeration of high pressure boiler feed water is done to reduce ___________________?
Question 8
Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters ?
Question 9
Beyond what concentration of H2S in air, acute danger to human life exists ?
Question 10
Methyl isocyanate (MIC) gas (TLV <1 ppm), which caused Bhopal gas tragedy in 1984 falls under the category of ______________ toxic gas?