35751. In case of an unsaturated mixture of gas and vapor, the percentage saturation is __________ its relative saturation.
35752. At constant pressure, with increase of temperature, the dew point will
35753. For a single component absorber, the operating line is straight only when plotted in term of __________ units.
35754. In case of unsaturated air
35755. For a binary mixture with low relative volatility,
35756. Plate efficiency
35757. Absorption accompanied by heat evolution results in
35758. Even though bubble cap towers are very effective for humidification operation, they are not used commonly in industries, because of the
35759. For a distillation column operating at minimum reflux, the
35760. A solid is being dried in the linear drying rate regime from moisture content Xo to XF. The drying rate is zero at X = 0 and the critical moisture content is the same as the initial moisture Xo. The drying time for M = (Ls/ARc) is (where, L = total mass of dry solid, A = total surface area for drying Rc = Constant maximum drying rate per unit area X = moisture content (in mass of water/mass of dry solids))
35761. Flash distillation is suitable for the separation of components
35762. In Mcabe-Thiele method, at infinite reflux ratio
35763. Leaching rate is independent of the
35764. Use of packed towers for distillation is generally limited to the
35765. In the clutch disc,the torsional vibrations is absorbed by the
35766. Which of the following decreases during evaporative cooling process with recirculated water supply ?
35767. Laboratory determination of the dif-fusivity of vapor is done by __________ method.
35768. The minimum liquid rate to be used in an absorber corresponds to an operating line
35769. Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be
35770. For absorbing a sparingly soluble gas in a liquid, the
35771. A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.
35772. The boiling points of pure components of a binary system __________ with increase in total pressure of the system.
35773. 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
35774. Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as
35775. Desulphurisation of petrol is done in a
35776. Chemisorption compared to physical absorption has
35777. Rate of adsorption increases as the
35778. Pick out the system with maximum boiling azeotrope at 1 atm.
35779. At 750°K and 1 atm, the approximate value of Schmidt number for air is
35780. Calculation of mass transfer co-efficient is mostly/normally done using __________ theory.
35781. The velocity, concentration and temperature boundary, for the boundary layer development on a flat plate during connective mass transfer will be same, if
35782. Which of the following is used for the concentration of rubber latex ?
35783. As the reflux ratio, in a continuous counter-current extraction is increased, the number of stages
35784. In triangular co-ordinates, the ternery composition point falls __________ of the triangle.
35785. In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg)
35786. Penetration theory states that the mass transfer co-coefficient is equal to (where, De is diffusivity and 't' is time)
35787. Reboiler is considered as one theoretical plate, because
35788. Mass transfer rate between two fluid phases does not necessarily depend on the __________ of the two phases.
35789. In a solution containing 0.30 Kg mole of solute and 600 kg of solvent, the molality is
35790. Fenske equation determines the
35791. The term "cooling range" in a cooling tower refers to the difference in the temperature of
35792. Which of the following is the most suitable for extraction in a system having very low density difference ?
35793. Ceramic recuperators are generally made of
35794. Hammers and railway rails are normally made of
35795. Softness of silver can be converted into hardness by alloying it with small quantity of
35796. The addition of antimony in tin-based alloys improves its
35797. The melleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the miximum malleability ?
35798. The main purpose of galvanising iron sheets is to
35799. The impure iron (pig iron) that is tapped out from blast furnace contains about __________ percent carbon.
35800. Invar used in thermocouples is an alloy of nickel and
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