A. Inventory changes do not take place
B. Ratio of streams entering/leaving are independent of time
C. Flow rates & composition both are time dependent
D. None of these
CHEMICAL ENGINEERING
N.T.P. corresponds to__________________?
A. 1 atm absolute pressure & 0°C
B. 760 mm Hg gauge pressure & 0°C
C. 760 torr & 15°C
D. 101.325 KPa gauge pressure & 0°C
‘Giga’ stands for__________________?
A. 109
B. 10-12
C. 1012
D. 1015
Gases having same reduced temperatures and reduced pressures_________________?
A. Deviate from ideal gas behaviour to the same degree
B. Have nearly the same compressibility factor
C. Both A. and B.
D. Neither A. nor B.
According to Raoult’s law, “The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component.” Raoult’s law is not applicable under the following assumption/condition?
A. No component is concentrated at the surface of the solution
B. The component molecules are non polar and are of almost equal size
C. In the formation of solution, chemical combination/molecular association between unlike
molecules takes place
D. The attractive forces between like and unlike molecules are almost equal
The pH value of a solution is 5.9. If the hydrogen ion concentration is decreased hundred times, the solution will be______________?
A. Basic
B. More acidic
C. Neutral
D. Of the same acidity
In case of an unsaturated vapor-gas mixture, the humid volume increases with increase in the________________?
A. Total pressure
B. Absolute humidity at a given temperature
C. Both A. and B.
D. Neither A. nor B.
1 gm mole of methane (CH4) contains_________________?
A. 6.02 × 1023 atoms of hydrogen
B. 4 gm atoms of hydrogen
C. 3.01 × 1023 molecules of methane
D. 3 gms of carbon
The equilibria relations in a multi-component and multiphase system cannot be calculated with the help of the_______________?
A. Phase rule
B. Experimental data
C. Empirical equations
D. Theoretical equations