Chemical Engineering — Test 69
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Question 1
In a packed tower, the value of HETP equals HTUOG, when the equilibrium and the operating lines are (where, HETP = height equivalent to a theoretical plate HTUOG = overall gas phase height of a transfer unit) ?
Question 2
Make up water is required in a cooling tower to replace the water lost by___________________?
Question 3
The expression, ln(F/W) = ∫xF xW [dx/y* – x)] is_____________________?
Question 4
The diffusivity, DAB (for component A diffusing in B) is equal to the diffusivity DBA (for component B diffusing in A) for a binary mixture of________________?
Question 5
Molecular diffusion is caused by the________________?
Question 6
Liquid diffusivity is of the order of _______________ cm2 /second?
Question 7
The overall mass transfer co-efficient for the absorption of SO2 in air with dilute NaOH solution can be increased substantially by___________________?
Question 8
When the psychometric ratio is ______________ then the adiabatic saturation temperature and wet bulb temperature becomes equal?
Question 9
Use of raschig rings in place of crushed stones as packing in packed beds (other things being same) ?
Question 10
Fenske equation for determining the minimum number of theoretical stages in distillation column holds good, when the_________________?