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.Management Sciences
Category: Stoichiometry
As per Kirchhoff s equation, the heat of reaction is affected by the__________________?
0
A. Pressure
B. Volume
C. Temperature
D. Molecularity
Disappearance of snow in subzero weather exemplifies the process of_________________?
A. Evaporation
B. Sublimation
C. Vaporisation
D. Melting
In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is__________________?
A. Independent of the temperature
B. Increased with the increase in pressure
C. Decreased with the increase in pressure
D. Unchanged by the pressure change
A bypass stream in a chemical process is useful, because it___________________?
A. Facilitates better control of the process
B. Improves the conversion
C. Increases the yield of products
D. None of these
The reverse process of fractional crystallisation is called__________________?
A. Stripping
B. Leaching
C. Differential distillation
D. Absorption
For water evaporating into unsaturated air under adiabatic conditions and at constant pressure, the ____________ remains constant throughout the period of vaporisation ?
A. Dry bulb temperature
B. Wet bulb temperature
C. Humidity
D. Relative saturation
Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m3. The diffusivity of aniline in air is 0.74 × 10-5m2/s. The numerical value of mass transfer co-efficient is 7.4 × 10-3. Its units are_______________________?
A. m/s
B. cm/s
C. mole/m2.s.Pa
D. k.mole/m2.s.Pa
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