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Fractional distillation: Quiz


Question 1: The Graham condenser is a spiral tube within a water jacket, and the ________ has a series of large and small constrictions on the inside tube, each increasing the surface area upon which the vapor constituents may condense.
Condenser (laboratory)Round-bottom flaskSoxhlet extractorLaboratory glassware

Question 2: In another source, a ________ difference of 30 °C requires 12 theoretical plates and, for a difference of 3 °C, the number of plates increased to 1000.
Critical point (thermodynamics)Phase transitionMelting pointBoiling point

Question 3: The distillation towers have liquid outlets at intervals up the column which allow for the withdrawal of different fractions or products having different ________ or boiling ranges.
Melting pointPhase transitionBoiling pointCritical point (thermodynamics)

Question 4: Distillation is the most common form of separation technology used in petroleum refineries, petrochemical and ________ and natural gas processing plants.
Chemical plantChemical industryContinuous distillationWater

Question 5: Unlike conventional tray distillation in which every tray represents a separate point of ________ the vapor liquid equilibrium curve in a packed column is continuous.
Vapor-liquid equilibriumRelative volatilityLiquid-liquid extractionAcid dissociation constant

Question 6: For a multi-component feed, ________ models are used both for design and operation.
Computer simulationSocial sciencesVideo game genresSimulation

Question 7: Distillation of chlorosilanes also enable the production of high-purity silicon for use as a ________.
SemiconductorPhysicsQuantum mechanicsCondensed matter physics

Question 8: Fractional distillation in a laboratory makes use of common laboratory glassware and apparatuses, as well as some single-purpose items such as a ________.
Continuous distillationRefluxFractionating columnBatch distillation

Question 9: Some mixtures form ________, where the mixture boils at a lower temperature than either component.
DistillationLiquid-liquid extractionAzeotropeFlocculation

Question 10: Fractional distillation is the separation of a mixture into its component parts, or fractions, such as in separating chemical compounds by their ________ by heating them to a temperature at which several fractions of the compound will evaporate.
Melting pointPhase transitionCritical point (thermodynamics)Boiling point


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