Q. 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 can be removed by

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Q. Which of the following dust collection equipments is the least efficient (for sub-micronic particles) ?

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Q. Bag filter design is predominantly dependent on gas temperature, as it affects the gas density & viscosity and the selection of filtering material. The pressure drop in a bag filter is

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Q. Dust collection efficiency of a cyclone separator depends upon its

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Q. Which of the following is the most detrimental for water used in high pressure boiler ?

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Q. Turbidity of water is an indication of the presence of

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Q. Presence of excess flourine in water causes

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Q. Siderosis is a disease caused by the inhalation of __________ dust.

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Q. Which of the following pollutants is not emitted during volcanic eruptions ?

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Q. Ionisation potential employed in the industrial electrostatic precipitator is of the order of

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Q. The widest explosive limit is of __________ , thereby making it the most explosive gas.

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Q. Aerobic biological oxidation ponds used for the purification of polluted water

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Q. Polluted water having low BOD are most economically treated in

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Q. Tri-sodium phosphate is used in boiler water treatment to reduce

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Q. Scale formation in boiler is controlled by

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Q. Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels.

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Q. TLV of mercury in potable (drinking) water is about __________ ppm.

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Q. 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)?

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Q. Which is a secondary air pollutant ?

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Q. Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by

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