Naphthalene is removed from coke oven gas by ________________________?

Related Mcqs:

1. In an integrated steel plant, NH3 present in coke oven gas is normally recovered as_________________?

   A. (NH4)2SO4
   B. NH4Cl
   C. (NH4)2 NO3
   D. Liquid NH3

2. Coke oven gas consists mainly of ____________________?

   A. H2, & CH4
   B. CO, & CO2
   C. H2, & CO
   D. CH4, & CO

3. Catalytic oxidation of naphthalene produces_______________?

   A. Styrene
   B. Phenol
   C. Phthalic anhydride
   D. None of these

4. Catalytic oxidation of naphthalene produces ?

   A. Styrene
   B. Phenol
   C. Phthalic anhydride
   D. None of these

5. H2S is scrubbed from refinery gases by absorption using ________________________?

   A. Dilute H2SO4
   B. Ethanol amine
   C. Chilled water
   D. Tri-butyl phosphate

6. Coke used for the production of calcium carbide should have____________________?

   A. Low ash content
   B. Low ignition temperature
   C. High electrical resistivity
   D. All A , B. and C.

7. During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to__________________?

   A. Increase the rate of absorption
   B. Avoid corrosion
   C. Reduce the cooling water circulation rate
   D. None of these

8. Permanent hardness of water can be removed by_________________?

   A. Addition of soda ash to it
   B. Treating it with zeolites
   C. Passing it through sodium hexametaphosphate
   D. All A , B, and C.

9. Temporary hardness of water can be removed by__________________?

   A. Addition of alum (a coagulant)
   B. Boiling
   C. Filtration (through gravity sand filter)
   D. Addition of lime

10. Impurities present in brine is normally removed by treatment with ?

    A. NH3 and CO2
    B. Lime and soda ash
    C. Lime, ammonia and carbon
    D. All A , B. and C.