A. Suction pump
B. Compressed air jet
C. Steam jet ejector with a barometric condenser
D. None of these
Related Mcqs:
- In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be___________________?
A. At ground level
B. 2 metres above the ground
C. 5 metres above ground
D. 10 metres above ground - In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be_____________________?
A. At ground level
B. 2 metres above the ground
C. 5 metres above ground
D. 10 metres above ground - Swenson-Walker crystalliser is a __________________ unit ?
A. Continuous
B. Batch
C. Semi-batch
D. Cooling (adiabatic)-cum-evaporation - Agitator is provided in a crystalliser for____________________?
A. Avoiding deposition on cooler surfaces
B. Formation of nuclei
C. Crystal growth
D. All A., B. and C. - Drying operation under vacuum is carried out to __________________?
A. Dry those materials which have very high unbound moisture content
B. Reduce drying temperature
C. Increase drying temperature
D. Dry materials having high bound moisture content - Pick out the wrong statement. Generally for physical adsorption, a gas of________________?
A. Higher molecular weight is adsorbed in preference to a gas of low molecular weight
B. High critical temperature is adsorbed in preference to a gas of low critical temperature
C. Low volatility is adsorbed in preference to a gas of high volatility
D. None of these - Use of packed towers for distillation is generally limited to the__________________?
A. Small sizes
B. Multi-component distillation
C. High pressure operation
D. Vacuum distillation - Use of packed towers for distillation is generally limited to the____________________?
A. Small sizes
B. Multi-component distillation
C. High pressure operation
D. Vacuum distillation - Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the_________________?
A. Mass transfer co-efficient
B. Thermal diffusivity
C. Kinematic viscosity
D. Volumetric diffusivity - Adsorption is a unit operation which generally involves _______________ systems?
A. Liquid-solid
B. Gas-solid
C. Fluid-solid
D. Solid-solid
