_______________ diffusion is used for separating the isotopes of methane ?
A. Thermal
B. Pressure
C. Concentration
D. Force
Month: February 2019
For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams__________________?
For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams__________________?
A. Increases
B. Decreases
C. Remain unaffected
D. Passes through a maximum
The relative saturation of a partially saturated mixture of vapour and gas can be increased by ________________ of the mixture?
The relative saturation of a partially saturated mixture of vapour and gas can be increased by ________________ of the mixture?
A. Reducing the total pressure
B. Increasing the total pressure
C. Reducing the temperature
D. Both B. and C.
Steam distillation is used for separation of high boiling ____________________?
Steam distillation is used for separation of high boiling ____________________?
A. Substances from non-volatile impurities
B. Volatile impurity from still higher boiling substances
C. Both A. and B.
D. Neither A. nor B.
When both the fluids flow concurrently in an absorber, the slope of the operating line is____________________?
When both the fluids flow concurrently in an absorber, the slope of the operating line is____________________?
A. -ve
B. +ve
C. 1
D. -1
The McCabe ΔL law states that the____________________?
The McCabe ΔL law states that the____________________?
A. Molar heats of vaporisation of components are nearly equal
B. Linear crystal growth rate depends on the degree of super-saturation
C. Linear crystal growth rate does not depend on the crystal size
D. Linear crystal growth rate depends on the crystal size
Very tall packed towers are divided into series of beds to___________________?
Very tall packed towers are divided into series of beds to___________________?
A. Reduce the overall pressure drop
B. Avoid channelling
C. Reduce liquid hold-up
D. Avoid flooding
Separation of the isotopes of helium for scientific investigations is done by_____________________?
Separation of the isotopes of helium for scientific investigations is done by_____________________?
A. Reverse osmosis
B. Thermal diffusion
C. Leaching
D. Solvent extraction
Flash distillation is suitable for the separation of components_________________?
Flash distillation is suitable for the separation of components_________________?
A. Having very close boiling points
B. Which form maximum boiling azeotrope
C. Having very wide boiling points
D. Which form minimum boiling azeotrope
If „f’ is defined as above, then which of the following applies to a feed at dew point ?
If „f’ is defined as above, then which of the following applies to a feed at dew point ?
A. f = 1
B. f 1
D. 0 < f < 1