______________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant ?

Related Mcqs:

1. Which of the following pollutants is absent in the emissions from a fertiliser plant ?

   A. SO2 & SO3 B. NO2 C. NH3 D. CO...

2. Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants ?

   A. NOx B. Hg C. SO2 D. F...

3. _____________ plant emits large amount of SO2 as an air pollutant?

   A. Nitric acid B. Sulphuric acid C. Chlor alkali D. Iron & steel...

4. Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by_________________?

   A. Quenching of hot coke B. Discharging in the river stream C. Filtration and recycling for cooling coke oven gas D. None of these...

5. 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_______________?

   A. Chlorination B. Treating in biological oxygen pond C. Chemical coagulation D. None of these...

6. Tri-sodium phosphate is used in boiler water treatment to reduce____________________?

   A. Turbidity B. Caustic embrittlement C. Suspended silica D. Dissolved oxygen...

7. For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than ______________ ppm?

   A. 10000 B. 5 C. 500 D. 1000...

8. Salt content in sea water is about ______________ percent?

   A. 0.5 B. 1 C. 3.5 D. 9.05...

9. There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant ?

   A. Mercury B. Arsenic C. Aluminium D. Lead...

10. The common pollutant generated in chlor-alkali industry and battery manufacture is ___________________?

    A. Mercury B. Brine C. Phosphate D. None of these...