'Cox' chart which is useful in the design of a distillation column (particularly

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Chemical Engineering ‣ Stoichiometry Comments

Question
'Cox' chart which is useful in the design of a distillation column (particularly suitable for petroleum hydrocarbons) is a plot of the
Options
A. temperature vs. log (vapor pressure).
B. vapor pressure vs. log (temperature).
C. log (temperature) vs. log (vapor pressure).
D. vapor pressure vs. temperature.

Correct Answer

temperature vs. log (vapor pressure).

Stoichiometry problems

Search Results

2. Boiling point of a non-homogeneous mixture of immiscible liquids is __________ that of any one of its separate components.
Options
A. lower than
B. higher than
C. equal to
D. either (a) or (b); depends on the liquids

5. For water evaporating into usaturated air under adiabatic conditions and at constant pressure, the __________ remains constant throughout the period of vaporisation.
Options
A. dry bulb temperature
B. wet bulb temperature
C. humidity
D. relative saturation

7. One of the specific gravity scales is "Brix" (used speicifically for sugar solution). It is defined as
Options
A. Brix = (400/G) - 400
B. Brix = 200 (G-1)
C. Brix = 145 - (145/G)
D. none of these

9. Pick out the wrong statement.
Options
A. Ten times dilution of a normal solution (N) reduces its normality to N/10.
B. When equal weights of oxygen and methane are mixed in an empty reactor at room temperature, then the fraction of total pressure exerted by the oxygen is 1/2.
C. Volume occupied by 9.034 x 10²³ atoms of oxygen in ozone (O₃) at NTP will be 11200 c.c
D. One kg mole of an ideal gas at N.T.P occupies 22400 Nm³.

10. The density of a gas at N.T.P.is '?'. Keeping the pressure constant (i.e. 760 mm Hg), the 3 density of the gas will become at a temperature of __________ �K
Options
A. 273�
B. 300�
C. 400�
D. 300�

Comments

More in Chemical Engineering: