Test: Concentration And Velocity - Chemical Engineering MCQ
15 Questions MCQ Test - Test: Concentration And Velocity
In which of the following conditions mass transfer will occur spontaneously? C and z is concentration and distance respectively.
Which among the following is always true for mass transfer to occur?
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A solution contains 0.3 moles of solute A, 0.2 moles of B and 0.5 moles of C. What will be the mole fraction of A in the mixture?
A gas mixture containing 21% O2 and 79% N2 flows through a pipe of circular cross-section of diameter 2cm at atmospheric pressure. The velocity of O2 is 0.04m/s and N2 is 0.035m/s.
Q. What is the value of molar average velocity (m/s) of the mixture?
A gas mixture containing 21% O2 and 79% N2 flows through a pipe of circular cross-section of diameter 2cm at atmospheric pressure. The velocity of O2 is 0.04m/s and N2 is 0.035m/s.
Q. What will be the value of mass average velocity (m/s)?
A gas mixture containing 21% O2 and 79% N2 flows through a pipe of circular cross-section of diameter 2cm at atmospheric pressure. The velocity of O2 is 0.04m/s and N2 is 0.035m/s.
Q. What is the value of Volume average velocity?
In a gas mixture if molecular weights of all the species are equal than which one will be more, Mass average velocity or Molar average velocity?
The velocity of various components of mixture(21% A, 78% B and 1% C) are:
Velocity is in the form: v⃗=xi+yj+zk
Velocity of component A= (0.1, 0, 0)
Velocity of component B= (0, 0.1, 0)
Velocity of component B= (0, 0, 0.1)
Calculate the value of average molar velocity?
Calculate the value of mass average velocity in the previous question?
For the calculation of Mass average velocity, which velocity of the molecule is used?
Which among the following can be the unit of Flux?
A molecule in a mixture moves with a velocity of 0.03m/s in (+x) direction. The concentration of the particle is 0.5 mol/liter. A observer is running in (-x) direction with a velocity of 2m/s. calculate the value of molar flux (mol/m2.s) relative to the observer.
In the previous question what will be the value of flux (mol/m2.s) with respect to a stationary observer?
Under which of the following conditions mass average velocity and molar average velocity are equal?
The mass flow rate of a component in a mixture in X-direction is 2kg/s. The area vector at a particular cross-section is (1.1, 3.2, 5.4) cm2. Calculate the value of flux (kg/cm2.s) through the cross-section.
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