Chemical Engineering MCQs

6108 MCQs  (Page 210 of 611)

Ponchon-Savarit method analyses the fractional equipment based on___________________?
A. Enthalpy balance only
B. Material balance only
C. Both enthalpy and material balances
D. The assumption of constant molal-overflow
The following plot gives the saturated humidity (He) versus temperature (T).Line joining (H1, T1) and (H2, T2) is the constant enthalpy line. Choose the correct one from among the alternatives A, B, C and D____________________?
A. T1-dew point temp; t2-dry bulb temp; t3-wet bulb temp
B. T1-dew point temp; t2-wet bulb temp; t3-dry bulb temp
C. T1-wet bulb temp; t2-dry bulb temp; t3-dew point temp
D. T1-dry bulb temp; t2-wet bulb temp; t3-dew point temp
Channelling in a packed tower results from the_____________________?
A. High pressure drop
B. Maldistribution of liquid
C. Non-uniformity of packing
D. Both b. and c.
Which of the following adsorbent is used in the refining of sugar?
A. Bone charcoal
B. Wood charcoal
C. Silica gel
D. Activated clay
With increase in pressure, the relative volatility for a binary system__________________?
A. Increases
B. Decreases
C. Remains same
D. Either a. or b., depends on the system
With increase in pressure, the relative volatility for a binary system_________________?
A. Increases
B. Decreases
C. Remains same
D. Either a. or b., depends on the system
An example of elution is______________________?
A. Separation of uranium oxide from its ore by h2so4 in a pachuca tank
B. Separation of sugar from sugar beet by hot water
C. Dissolution of tannin out of tree barks by water
D. Recovery of vegetable oils from seeds