Q. A binary mixture of oxygen and nitrogen with partial pressures in the ratio 0.21 and 0.79 is contained in a vessel at 300 K. If the total pressure of the mixture is 1 * 10⁵ N/m², find the average molecular weight of the mixture

View solution

Q. In which of the following conditions mass transfer will occur spontaneously? C and z is concentration and distance respectively.

View solution

Q. Which among the following is always true for mass transfer to occur?

View solution

Q. 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?

View solution

Q. 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.

What is the value of molar average velocity (m/s) of the mixture?

View solution

Q. 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.

What will be the value of mass average velocity (m/s)?

View solution

Q. 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.

What is the value of Volume average velocity?

View solution

Q. 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?

View solution

Q. The velocity of various components of mixture(21% A, 78% B and 1% C) are:
Velocity is in the form: v=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?

View solution

Q. The velocity of various components of mixture(21% A, 78% B and 1% C) are:
Velocity is in the form: v=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 mass average velocity?

View solution

Q. For the calculation of Mass average velocity, which velocity of the molecule is used?

View solution

Q. Which among the following can be the unit of Flux?

View solution

Q. 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.

View solution

Q. 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. What will be the value of flux (mol/m².s) with respect to a stationary observer?

View solution

Q. Under which of the following conditions mass average velocity and molar average velocity are equal?

View solution

Q. 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.

View solution

Q. Fick’s law is given by the formula

View solution

Q. What is the unit of diffusion coefficient?

View solution

Q. What is the molecular weight of ammonia?

View solution

Q. What is the molecular volume of air at normal boiling point?

View solution