- (A) Bag filter
- (B) Scrubber
- (C) Electrostatic precipitator
- (D) Cyclone separator
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Latest MCQs
- (A) 25
- (B) 50
- (C) 70
- (D) 85
- (A) SPM
- (B) Thermal pollution
- (C) Radioactive rays
- (D) Noise pollution
- (A) Roentgen
- (B) Decibel
- (C) Hertz
- (D) None of these
- (A) Nothing but black smoke
- (B) A combination of smoke and fog
- (C) A liquid particle resulting from vapor condensation
- (D) A solid particle
- (E) g. fly-ash
- (A) Addition of methane to the furnace atmosphere reduces decarburising by hydrogen
- (B) Nitrogen in presence of steam decor-burises high carbon steel, whereas hydrocarbon gases carburise the surface of steel at annealing temperatures
- (C) Active nitrogen (formed by cracking ammonia at the metal surface) cause nitride formation with increase in surface hardness
- (D) None of these
- (A) Chemical coagulation
- (B) Floatation & skimming
- (C) Centrifugation
- (D) Ultra filtration
- (A) 10
- (B) 20
- (C) 40
- (D) 80
- (A) Flood
- (B) Cyclone
- (C) Decrease in food productivity
- (D) All
- (A) Ozone and iodine
- (B) Chlorine or its compounds
- (C) Ultraviolet light for irradiation of water
- (D) All
