Co-current absorbers are usually used when the gas to be dissolved in
the liquid is
(A) Sparingly soluble
(B) Highly soluble
(C) A pure substance
(D) A mixture
Description : When the gas to be dissolved in liquid is a/an __________ then normally co-current adsorber are used. (A) Mixture of two gases (B) Pure gas (C) Ideal gas (D) Sparingly soluble gas
Last Answer : (B) Pure gas
Description : Pick out the wrong statement (A) Co-current absorbers are usually used, when the gas to be dissolved in the liquid is a pure substance (B) In case of gas absorption, HETP is ... reaction (D) In actual practice, absorption is an endothermic process, while stripping is an exothermic process
Last Answer : (D) In actual practice, absorption is an endothermic process, while stripping is an exothermic process
Description : For absorbing a sparingly soluble gas in a liquid (A) Gas side mass transfer co-efficient should be increased (B) Liquid side mass transfer co-efficient should be increased (C) Liquid side mass transfer co-efficient should be decreased (D) Mass transfer co-efficient must be kept constant
Last Answer : (B) Liquid side mass transfer co-efficient should be increased
Description : For absorbing a sparingly soluble gas in a liquid, the (A) Gas side co-efficient should be increased (B) Liquid side coefficient should be increased (C) Gas side co-efficient should be decreased (D) Liquid side co-efficient should be decreased
Last Answer : (B) Liquid side coefficient should be increased
Description : . In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because (A) SO3 gas is sparingly soluble in water (B) Water forms an acid mist, which is difficult to absorb (C) The purity of acid is affected (D) Scale formation in the absorber is to be avoided
Last Answer : (B) Water forms an acid mist, which is difficult to absorb
Description : `A_(3)B_(2)` is a sparingly soluble salt with molar mass `M(gmol_(-))` and solubility `x` gm `litre_(-1)`, the ratio of the molar concentration of `B^
Last Answer : `A_(3)B_(2)` is a sparingly soluble salt with molar mass `M(gmol_(-))` and solubility `x` gm `litre_(-1)`, the ... `(1)/(54)(M^(4))/(x^(4))` D. None
Description : Give an example of sparingly soluble salt?
Last Answer : Ans. AgCl
Description : For contacting a highly soluble gas with a liquid (A) Bubble the gas through liquid (B) Spray the liquid on gas stream (C) Either (A) or (B) would suffice (D) None of these
Last Answer : (A) Bubble the gas through liquid
Description : In the desorption of highly soluble gas from the liquid, the main resistance will be in the __________ phase. (A) Gas (B) Liquid (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (B) Liquid
Description : Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is (A) Insoluble in the liquid (B) Soluble in the liquid (C) Non-ideal in nature (D) At a fixed temperature
Last Answer : (A) Insoluble in the liquid
Description : Sides of equilateral-triangular co-ordinates (on which ternary liquid system is plotted) represent (A) A pure component (B) A binary mixture (C) A ternary mixture (D) Partially miscible ternary system
Last Answer : (B) A binary mixture
Description : For absorbers, high pressure drop results in (A) Increased efficiency (B) Decreased efficiency (C) High operating cost (D) Better gas liquid contact
Last Answer : (C) High operating cost
Description : Which of the following is not fixed by the process requirements, in the design of absorbers? (A) Flow rate of the entering gas (B) Composition of the entering liquid (C) Terminal concentrations of gas stream (D) None of these
Last Answer : (D) None of these
Description : Is liquid air a mixture or a pure substance?
Last Answer : Liquid air is a mixture.
Description : When homogeneous mixture in which one substance is dissolved in another substance is known as a?
Last Answer : Need answer
Description : (1) a homogeneous mixture of two or more substances Explanation: A homogeneous mixture of two or more substances uniformly dispersed throughout a single phase is called solution. In such a mixture, a ... the solvent including its phase, and the solvent is commonly the major fraction of the mixture.
Last Answer : Choose the incorrect statement pertaining to organic compounds - (1) They have low melting and boiling points (2) They do not dissolve in water (3) They are not easily combustible (4) They contain mainly carbon and hydrogen
Description : (1) aluminium powder and ammonium nitrate Explanation: Ammonal is an explosive made up of ammonium nitrate and aluminium powder. The ammonium nitrate functions as an oxidizer and the aluminium ... a fairly substantial shock, though it is still more sensitive than trinitrotoluene and composition C4.
Last Answer : Gelatin is mostly used in making icecreams in order to - (1) prevent making a colloid (2) stabilise the colloid and prevent crystallisation (3) stabilise mixture (4) enrich the aroma
Description : Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m2 and the ... extraction achieved in the unit is (A) 25% (B) 50% (C) 70% (D) 90%
Last Answer : (B) 50%
Description : 'Shock-absorbers are usually made of steel as it – (1) is not brittle (2) has lower elasticity (3) has higher elasticity (4) has no ductile property
Last Answer : (3) has higher elasticity Explanation: A shock absorber is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. Steel is an alloy made by combining iron and other elements, the most common of these being carbon.
Description : Shock absorbers are usually mode of steel as it
Last Answer : Has Higher elasticity
Description : Shock absorbers are usually mode of steel as it?
Description : 'Shock-absorbers' are usually made of steel as it : (1) is not brittle (2) has lower elasticity (3) has higher elasticity (4) has no ductile property
Last Answer : has higher elasticity
Description : For a ternary mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a __________ of the equilateral triangular co-ordinates. (A) Binary mixture is ... Ternary mixture is represented by the sides (D) Pure component is represented by the apex
Last Answer : (D) Pure component is represented by the apex
Description : A solution is (1) a homogeneous mixture of two or more substances (2) a solid dissolved in a liquid (3) a solid dissolved i water (4) a mixture of two liquids
Last Answer : a homogeneous mixture of two or more substances
Description : The individual mass transfer co-efficients (moles/m2s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of ... A) Liquid side (B) Gas side (C) Interfacial (D) Both liquid and gas side
Last Answer : (B) Gas side
Description : Expert power is the power that comes from the amount of knowledge a person has obtained in a specific area. This type ofpower is: 1. Critical to a project manager because the PM has to have ... by the PM because the PM cannot stay current on all areas of expertise and also manage the project
Last Answer : 4. Used sparingly if at all by the PM because the PM cannot stay current on all areas of expertise and also manage the project
Description : The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing 50 mole % each of n- heptane and n octane into pure compounds each at 1 atm is (A) -2 RT ln 0.5 (B) -RT ln 0.5 (C) 0.5 RT (D) 2 RT
Last Answer : (B) -RT ln 0.5
Description : Mixture of liquid and steam of the same substance in which both are at saturation temperature. a. dry steam b. current steam c. wet steam d. aerosol
Last Answer : wet steam
Description : is chocolate chip cookie mix a pure substance or mixture?
Last Answer : Any cookie dough, or any dough for that matter is a mixture, because you mix different pure substances together.
Description : what is the difference between a mixture ,a solution ,and pure substance
Last Answer : Need Answer
Description : Is bromine a compound impure substance mixture or a pure substance?
Description : Is cinnamon a mixture or a pure substance?
Last Answer : Mixture
Description : How do the components of a mixture differ from the components of a pure substance?
Last Answer : The concentrations of the components of a mixture may vary.However, a pure substance has a definite composition that does notvary.
Description : Is chromium a pure substance or a mixture?
Last Answer : Pure substance.
Description : Is apple juice with no pulp a mixture or a pure substance?
Last Answer : mixture
Description : Is saltpeter a pure substance or mixture?
Last Answer : Saltpeter (KNO3) is a compound.
Description : Is a salt substitute a pure substance or mixture?
Description : Is lemonade pure substance or mixture?
Last Answer : a mixture
Description : Is nickel a pure substance or a mixture?
Last Answer : Nickel is a chemical element, and as such, it is a puresubstance.
Description : Is candy a mixture or a pure substance?
Description : Is beer a mixture or a pure substance?
Last Answer : Beer is not a pure substance.
Description : Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the __________ moisture. (A) Bound (B) Unbound (C) Critical (D) None of these
Last Answer : (A) Bound
Description : Heavy water used in the nuclear reactors to slow down the speed of neutrons is (A) Highly purified water (B) A compound of oxygen and deuterium (C) Water having dissolved salts of heavy metals (D) None of these
Last Answer : (B) A compound of oxygen and deuterium
Description : A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is φi yi P = Yi xifi° where, Φ is a vapor fugacity component, Yiis the liquid activity co- ... and liquid composition xi only (D) Temperature, pressure, liquid composition xi and vapour composition yi
Last Answer : (C) Temperature, pressure and liquid composition xi only
Description : The vacuole of a plant is composed of ____ with soluble substances dissolved within it. a. water c. oil b. juice d. minerals
Last Answer : a. water
Description : 1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is: (A) 0.4 (B) 0.25 (C) 0.2 (D) 0.175
Last Answer : (C) 0.2