In large thermal power stations very fine particulates present in flue gas are removed by___________________?

Related Mcqs:

1. Most efficient and suitable dust removal equipment for removal of fly-ash from flue gas in a thermal power plant is the__________________?

   A. Gravity settling chamber B. Cyclone separator C. Electrostatic precipitator D. Bag filter...

2. Fine grit present in sewage is removed in the _____________ during sewage treatment?

   A. Grit chamber B. Detritus tank C. Trickling filter D. Skimming tank...

3. Particulates (< 1μm size) remaining suspended in air indefinitely and transported by wind currents are called_________________?

   A. Fumes B. Mists C. Smoke D. Aerosols...

4. Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by__________________?

   A. Biological oxygen pond B. Radial settling tank (thickener) using coagulant (lime & ferrous sulphate) C. Lagoons D. Filtration...

5. Methyl isocyanate (MIC) gas (TLV <1 ppm), which caused Bhopal gas tragedy in 1984 falls under the category of ______________ toxic gas?

   A. Moderately B. Highly C. Extremely D. Very extremely...

6. Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by _____________________?

   A. Chemical coagulation B. Floatation & skimming C. Centrifugation D. Ultra filtration...

7. Iron & manganese present as pollutant in water cannot be removed by__________________?

   A. Ion exchange process B. Oxidation followed by settling & filtration C. Lime soda process or manganese zeolite process D. Chlorination...

8. H2S present in gaseous stream can be removed by adsorption on _____________________?

   A. Silica gel B. Active carbon C. Bog iron D. Limestone powder...

9. Radioactive substances present in the polluted water stream can be removed by_________________?

   A. Biological oxygen treatment B. Coagulation and filtration C. Adsorption in ion exchange materials D. None of these...

10. Soluble silica present in boiler feed water can be removed by______________________?

    A. Coagulation B. Filtration C. Anion exchanger D. Preheating it...