35602. Can a cooling tower cool water below the wet bulb temperature of inlet air ?
35603. The solvent used in liquid-liquid extraction should have __________ less than one.
35604. The suitable evaporator for concentration of foaming liquids is a __________ evaporator.
35605. The ratio of Murphree plate efficiency to point efficiency is always > 1 in a __________ flow model.
35606. Tea percolation employs
35607. Which of the following assumes constant molal vaporisation and overflow ?
35608. Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be
35609. Selectivity of the solvent used in solvent extraction should be
35610. Pick out the wrong statement pertaining to leaching.
35611. Wet bulb and dry bulb temperatures becomes identical at __________ percent saturation curve.
35612. NSc/NPr is called the
35613. McCabe-Thiele method
35614. The film penetration model of mass transfer was enunciated by
35615. The most economical range of absorption factor is
35616. Channelling is most severe
35617. Out of two equilibrium curves, first one lies above the diagonal and the second lies below the diagonal in the x-y plot. It means that separation by distillation is
35618. 'ADDUCTS' and 'CLATHRATES' are used in case of
35619. Adsorption is an unit operation which generally involves __________ systems.
35620. In case of __________ distillation, a solvent is added to alter the relative volatility of the mixture to be separated.
35621. Separation of the isotopes of helium for scientific investigations is done by
35622. In a binary system, separation is very efficient, when the relative volatility is
35623. Fenske-Underwood equation used for calculating the minimum number of theoretical plates in distillation column is valid for
35624. The binary diffusivity in gases does not depend upon the
35625. Berl saddle made of carbon cannot be used for
35626. 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
35627. During drying of a solid, the critical moisture content increases with
35628. Priming in a distillation column
35629. The commonly used solvent in supercritical extraction is
35630. When the liquid over a plate is of uniform concentration, then
35631. In saturated gas, the
35632. As per Gilliland's equation, the diffusivity is
35633. In the radiator pressure cap contains
35634. A mixture of 10% C6H6 vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C.
35635. Which of the following is not fixed by the process requirements, in the design of absorbers ?
35636. If the amount of the steam used in steam distillation is increased, the temperature of distillation
35637. Moisture in a solid exerting an equilibrium vapour pressure equal to that of the pure liquid at the same temperature is called the __________ moisture.
35638. Inside the distillation columns, the
35639. When the psychometric ratio is __________ then the adiabatic saturation temperature and wet bulb temperature becomes equal.
35640. Desirable value of absorption factor in an absorber is
35641. Refractory bricks are usually dried in a __________ dryer.
35642. For __________ drying, the effects of velocity, temperature and humidity of the gas and the thickness of the solid are the same.
35643. What is the degree of freedom of an absorption process in which only one component is transferred between phases ?
35644. Sticky material can be dried in a __________ dryer.
35645. Langmuir equation is associated with
35646. During the constant rate period of drying of a solid,
35647. At a fixed total pressure, humidity depends only on the
35648. Flash distillation is
35649. __________ developed the film theory.
35650. For absorbers, high pressure drop results in
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