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TLV of mercury in potable (drinking) water is about ______________ ppm?
Related MCQs
Presence of iron and manganese in water causes__________?
Presence of soluble organics in polluted water causes__________?
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Main pollutants released from iron & steel industry is__________?
A shallow pond in which the sewage is retained and biologically treated is called__________?
Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by__________?
Inhalation of silica dust causes a disease called__________?
Particles having diameter greater than 75 μm (micrometer = 10-6 mm) are called__________?
Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal ?
Removal of __________ is accomplished by aeration of water?
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Which is the best and the most effective method for the removal of organic contaminant present in the polluted water in very small quantity (say < 200 mg/litre) ?
Pick out the correct statement ?
When the concentration of SO2 in air is greater than __________ ppm, it gives a pungent smell?
Which is the most practical and economical method for removal of suspended solid matter from polluted water ?
Iron & manganese present as pollutant in water cannot be removed by__________?
In the context of the chemical process industries, the term BOD is normally associated with the__________?
Pick out the wrong statement pertaining to ‘green house’ for the plants ?
Most efficient and suitable dust removal equipment for removal of fly-ash from flue gas in a thermal power plant is the__________?
White smoke coming out of the chimney of a furnace indicates the use of__________?
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Methyl isocyanate (MIC) gas (TLV <1 ppm), which caused Bhopal gas tragedy in 1984 falls under the category of __________ toxic gas?
Beyond what concentration of H2S in air, acute danger to human life exists ?
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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Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm)?
The Killer gas which caused Bhopal gas tragedy in 1984 was__________?
Which of the following industries discharge mercury as a pollutant ?
The detrimental effect on organism and water quality with temperature rise of aquatic system is the reduction of __________ of water?
Which of the following is the most lethal water pollutant ?
In large thermal power stations very fine particulates present in flue gas are removed by__________?
Presence of __________ bacteria in water causes disease like typhoid?
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)?
Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million)?
Out of the following, TLV of __________ is maximum (about 500 ppm)?
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Corrosion in boilers can be prevented by __________?
Sulphur dioxide present in the industrial chimney exhaust gases causes__________?
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Which of the following plants does not emit appreciable amount of SO2 in atmosphere ?
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Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace?
Presence of nitrates in water in excess of 50 ppm causes__________?
TLV of mercury in potable (drinking) water is about ______________ ppm?
A. 0.001
B. 0.1
C. 1
D. 5
Correct Answer:
0.001
✔
Last Updated:
March 11, 2019