Related Questions

A colloidal system in which a liquid is dispersed in a liquid is called
A Gel
B Emulsion
C Sol
D Precipitate
For nearly isothermal operation involving large reaction time in a liquid-phase reaction, the most suitable reactor is a __________ reactor.
A Stirred tank
B Tubular flow
C Batch
D Fixed bed
__________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids.
A Sieve plate
B Packed
C Bubble cap plate
D None of these
Which of the following is the most suitable filter for separation of abrasive solids suspended in a corrosive liquid?
A Sand bed filter
B Plate and frame filter press
C Vacuum filter
D Batch basket centrifuge
According to Euler's column theory, the crippling load for a column of length (l) fixed at both ends is __________ the crippling load for a similar column hinged at both ends.
A Equal to
B Two times
C Four times
D Eight times
In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is
A More
B Less
C Same
D Unpredictable; depends on the particular reaction
A colloidal system, in which a liquid is dispersed in gas is called a/an
A Gel
B Aerosol
C Foam
D Emulsion
Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.
A CO2
B SO2
C NH3
D None of these
Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of
A Mass diffusivity to momentum diffusivity
B Thermal diffusivity to mass diffusivity
C Momentum diffusivity to thermal diffusivity
D None of these
The minimum number of theoretical plates is required for achieving a given separation in distillation column with
A No reflux
B Total reflux
C Zero reflux ratio
D Minimum reflux ratio

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