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Mass transfer
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the __________ of a fibre. electrical resistance [other wrong options] [Discuss in forum] |
| Q2 ⇒ Rate of leaching increases with increasing temperature [other wrong options] [Discuss in forum] |
| Q3 ⇒ Which of the following plays an important role in problems of simultaneous heat and mass transfer ? Lewis number [other wrong options] [Discuss in forum] |
| Q4 ⇒ __________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture. Wet bulb [other wrong options] [Discuss in forum] |
| Q5 ⇒ Mass transfer co-efficient of liquid is affected more by temperature than that for gases. [other wrong options] [Discuss in forum] |
| Q6 ⇒ Sides of equilateral-triangular co-ordinates (on which ternary liquid system is plotted) represent a binary mixture. [other wrong options] [Discuss in forum] |
| Q7 ⇒ In distillation, overhead product contains any number of components [other wrong options] [Discuss in forum] |
| Q8 ⇒ If G = insoluble gas in gas stream and L = non-volatile solvent in liquid stream, then the slope of the operating line for the absorber is L/G [other wrong options] [Discuss in forum] |
| Q9 ⇒ Pick out the correct statement. Ponchan-Savarit method is more accurate than McCabe-Thiele method to determine the number of theoretical stages required for the separation of non-ideal binary system by distillation. [other wrong options] [Discuss in forum] |
| Q10 ⇒ Solvent used in extractive distillation forms a low boiling azeotrope. [other wrong options] [Discuss in forum] |
| Q11 ⇒ Pick out the wrong statement pertaining to the rotary dryer. Rotary dryer is suitable for drying sticky material. [other wrong options] [Discuss in forum] |
| Q12 ⇒ At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant decreases [other wrong options] [Discuss in forum] |
| Q13 ⇒ With decrease in the throughput (compared with the design capacity) for a bubble cap distillation column, its efficiency increases [other wrong options] [Discuss in forum] |
| Q14 ⇒ The diffusion co-efficient in m2 /s. of acetic acid in benzene (liquid in liquid) is 2.09 x 10-4 [other wrong options] [Discuss in forum] |
| Q15 ⇒ Free flowing granular materials can be best dried in a __________ drier. rotary [other wrong options] [Discuss in forum] |
| Q16 ⇒ Mass transfer co-efficient is directly proportional to DAB0.5, according to __________ theory. penetration [other wrong options] [Discuss in forum] |
| Q17 ⇒ An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are being explored; (i) a reboiler is used and (ii) no reboiler is used but steam is fed directly to the bottom of the column. As compared to option (i), in option (ii) less number of trays are required. [other wrong options] [Discuss in forum] |
| Q18 ⇒ With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system) increases [other wrong options] [Discuss in forum] |
| Q19 ⇒ Moisture contained by a substance in excess of the equilibrium moisture is called the __________ moisture. free [other wrong options] [Discuss in forum] |
| Q20 ⇒ Mass transfer co-efficient varies as DAB0.5, according to the __________ theory. surface renewal [other wrong options] [Discuss in forum] |
| Or |