Ammonia present in the coke oven gas is removed by washing with___________________?

Related Mcqs:

1. Ammonia present in the coke oven gas is removed by washing with___________________?

   A. Caustic solution
   B. Dilute ammoniacal liquor
   C. Dilute HCl
   D. Ethanolamine

2. H2S present in naphtha reformed gas is removed by absorbing with___________________?

   A. Ethanolamine
   B. K2CO3
   C. HCl
   D. Vacuum gas oil

3. H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in meters) corresponding to an operating line given by, y = 5x + 0.001 is ______________________?

   A. 2.0
   B. 1.56
   C. 1.0
   D. 0.56

4. For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG: mass transfer co-efficient, moles/m2, a: interfacial area per unit volume of tower) ?

   A. G/(FG . a)
   B. FG/(G . a)
   C. (G . a)/FG
   D. L/(FG . G)

5. With increase in the liquid flow rate at a fixed gas velocity in a randomly packed counter current gas-liquid absorption column, the gas pressure drop___________________?

   A. Decreases
   B. Remains unchanged
   C. Increases
   D. Decreases exponentially

6. The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m2/m3)_________________?

   A. 500
   B. 1200
   C. 900
   D. 800

7. The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m2/m3) ?

   A. 500
   B. 1200
   C. 900
   D. 800

8. In the absorption of ammonia in water, the main resistance to absorption is by the _________________ phase?

   A. Liquid
   B. Gas
   C. Both A. & B.
   D. Neither A. nor B.

9. In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of _______________ is zero?

   A. Interface
   B. Gas phase
   C. Liquid phase
   D. All A , B. & C.

10. The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the_________________?

    A. Differential heat of adsorption
    B. Heat of wetting
    C. Integral heat of adsorption
    D. None of these