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i), , 2), , 3), , 4), , 5), , 6), , 7), , 8), , %», , 10), , 11), , 12), , B.Sc. (Semester II) Industrial Chemistry, P. No. VII (Unit Operation 1), , Test I, , In distillation the temperature of the liquid is reduced by vaporizing the, material, a) Flash b) Steam, ¢) Batch d) None of the above, In steam distillation two layers of carrier and material are separated by, a) Gravity separator b) Centrifugal decanter, c) Funnel d) None of the above, In steam distillation, when the sum of the partial pressure of the carrier &, material the total pressure, both the substances passes over in the, molecular ratio, a) Equals b) unequal, c) Small d) None of the above, The plate where the feed is admitted is...... ... plate, a) Feed b) Top, c) Bottom c) None of the above, The efficiency concerns with entire plate are the .. efficiency, a) Overall b) Murphree, c) Local d) none of the above, The efficiency concerned with single plate is the, a)ME_ b)LE, COE d) None of the above, , -. os Corresponds to a specific location on a single plate., a) LE b)ME, ec) OE d) none of the above, When the equilibrium line is sleeper than the operating line, the overall efficiency ts, , than the murphree efficiency, a) Gireater b) Less, c) Equal d) none of the above, The upper section of the column above the feed plate is known as known as the, ' . Seetion, , a) Striping b) Rectifyving, , c) Over head d) none of the above, , Mixer- settler is the ............. equipment,, a) Extraction b) Distillation, c) Gas absorption d) none of the above, The portion below the feed plate including feed plate is called the... section, a) Stripping b) Rectifying, c) Middle d) none of the above, , The liquid removed from the fructionators rich in the less volatile component is called, .. Product

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13), , 14), , 15), , 16), , 17), , 18), , 19), , 20), , a) Overhead b) Bottom, , c) Middle d) none of the above, , Thermal energy is used for the separation of liquid mixture is the, , a) Distillation b) Extraction, , c) Crystallization d) none of the above, , The ratio of surface energy created by crushing to the energy absorbed by the solid is the, efficiency, , a) Crushing b) Plate, , ¢) Mechanical d) none of the above, , The work required in crushing is proportional to the new surface created by the, law, , a) Rittinges b) Kicks, , ¢) Bond crushing d) none of the above, , The phases involved in distillation ure nies, , a) Liquid-vapor b) Liquid-liquid, , ¢) Solid - liquid d) none of the above, , In mass transfer operations the multistage system are called, , a) Cascades b) Units, , c) Trays d) None of the above, , ‘The liquid obtained by condensing the overhead vapors and returning some of the liquid, the top of column is termed as.....0........, , a) Condensate b) Reflux, , c) Low boiler d) none of the above, , The use of reflux increases the of the overhead product in distillation, a) Dilution b) Purity, , c) High boilers d) none of the above, , The composition of overhead product and reflux is..., , a) Same b) Different, , c) Zero d) None of the above