Fluorosis (a bone disease) is caused by the presence of high concentration of __
Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air.
Which of the following dust collection equipments is the least efficient (for su
Which of the following dust collection equipments is the least efficient (for sub-micronic particles)?
Maximum permissible limit of mercury in human blood is __________ micrograms/100
Maximum permissible limit of mercury in human blood is __________ micrograms/100 c.c.
Peroxyacyl nitrate (PAN), a pollutant is found in the
Peroxyacyl nitrate (PAN), a pollutant is found in the
5-200 μm size particles are called
5-200 μm size particles are called
In water treatment, alum [Al 2 (SO 4 ) 3 ] is used for the process of
In water treatment, alum [Al 2 (SO 4 ) 3 ] is used for the process of
Phenolic water generated in coke ovens & by-product plant attached to an integra
Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre…
Out of the following, TLV of __________ is maximum (about 500 ppm).
Out of the following, TLV of __________ is maximum (about 500 ppm).
Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per milli
Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm).
During sewage treatment, the sewage is subjected to __________ treatment in Imho
During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank.
Inhalation of silica dust causes a disease called
Inhalation of silica dust causes a disease called
Waste/polluted water discharged from electroplating, blast furnace and coal mini
Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly __________ substances.