. Ethanolamine is an absorbent used for the removal of __________ from air/gas. (A) HF (B) SO2 (C) H2S (D) Both (B) & (C)

. Ethanolamine is an absorbent used for the removal of __________ from
air/gas.
(A) HF
(B) SO2
(C) H2S
(D) Both (B) & (C)
by

1 Answer

Answer :

(D) Both (B) & (C)
by

Related questions

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Last Answer : (B) Monoethanolamine (MEA)

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Which reaction shows that the enthalpy of formation of H2S is Hf -20.6 kJmol?

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Interveinal necrotic spots on leaves appear due to (1) HF injury (2) SO2 injury (3) NO2 injury (4) O3 injury

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Presence of H2S in raw water (to be chlorinated) results in the (A) Reduced softening capacity of zeolite (B) Increased dosage of chlorine to provide a disinfecting residual in the water (C) Easy removal of its hardness (D) None of these

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Give reasons i) H2O is a liquid but H2S a gas. ii) Ammonia has higher boiling point than phosphine ii) Krypton & xenon make compounds.

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Last Answer : (A) 5

Death may occur, when SO2 concentration in atmospheric air exceeds __________ ppm.(A) 20 (B) 100 (C) 400 (D) 200

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Last Answer : (C) 400

When the concentration of SO2 in air is greater than __________ ppm, it gives a pungent smell. (A) 0.01 (B) 0.1 (C) 1 (D) 4

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In the converter of the contact process for the manufacture of H2SO4 the equilibrium conversion of SO2__________ (i) __________ with increase in temperature and __________ (ii) __________ with increase in the mole ratio of SO2 to air. (A) (i) increases (ii) decreases (B) (i) decreases (ii) increases (C) (i) increases (ii) increases (D) (i) decreases (ii) decreases

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Last Answer : (B) (i) decreases (ii) increases

In chamber process of sulphuric acid manufacture in industry, the gas phase oxidation of SO2 to SO3 is accomplished by a __________ reaction. (A) Non-catalytic homogeneous (B) Non-catalytic heterogeneous (C) Catalytic homogenous (D) Catalytic heterogeneous

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The overall mass transfer co-efficient for the absorption of SO2 in air with dilute NaOH solution can be increased substantially by (A) Increasing the gas film co-efficient(B) Increasing the liquid film co-efficient(C) Increasing the total pressure(D) Decreasing the total pressure

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Last Answer : (A) Increasing the gas film co-efficient

Scale formation in boiler is controlled by (A) Preheating of feed water (B) Reduction in hardness, silica & alumina in feed water (C) Keeping the pH value of feed water just below 7 (D) Eliminating H2S in feed water

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Last Answer : (B) Reduction in hardness, silica & alumina in feed water

Beyond what concentration of H2S in air, acute danger to human life exists? (A) 50 ppm (B) 100 ppm (C) 300 ppm (D) 700 ppm

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Bog iron used for the adsorption of H2S from coke oven gas is (A) An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide) (B) Iron impregnated with resin (usually Bakelite) (C) Carbon free iron (D) None of these

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Last Answer : (A) An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide)

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 metres) corresponding to an operating line given by, y = 5x + 0.001 is (A) 2.0 (B) 1.56 (C) 1.0

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Last Answer : (A) 2.0

Coke oven gas is stripped of its H2S and mercaptans content by (A) Absorption in wash oil (B) Adsorption on bog iron bed (C) Bubbling it through dilute sulphuric acid (D) Adsorption on silica gel

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Last Answer : (B) Adsorption on bog iron bed

Low viscosity absorbent is preferred for reasons of (A) Rapid absorption rates and good heat transfer characteristics (B) Improved flooding characteristics (C) Low pressure drop on pumping (D) All (A), (B) and (C)

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Last Answer : (D) All (A), (B) and (C)

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The emission in which the atom emits a photon of energy hf = E2 – E1 , in any arbitrary direction is a) Spontaneous emission b) stimulated emission c) induced emission d) both a & c

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Last Answer : (C) Both (A) & (B)

Removal of __________ heat is involved in the condensation of a vapor under saturated conditions. (A) Super (B) Sensible (C) Latent (D) Both (B) & (C)

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In sewers the gas generally found, is A. Hydrogen sulphide (H2S) B. Carbon dioxide (CO2) C. Methane (CH4) D. All the above

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What is the name of the absorbent material used in printers for excess ink?

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Is plywood absorbent?

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