Day 2 MRII

Question 1

A Vapor whose partial pressure is greater than its equilibrium vapor pressure at a given temperature is called

Answer 1

Superheated Vapor

Question 2

This is a steady-state temperature reached by a small amount of gas immersed in a large body of liquid under adiabatic conditions

Answer 2

Saturation Temperature

Question 3

Shape factor for a cylinder whose length equals its diameter is

Answer 3

1.5

Question 4

the Material passing one screening surface and retained on a subsequent surface is called

Answer 4

intermediate material

Question 5

In membrane separation process, an asymmetric membrane refers to

Answer 5

a composite polymer and porous membrane

Question 6

With the rise of temperature, the thermal conductivity of solid metals normally (decreases/remain constant/increases)

Answer 6

Decreases

Question 7

At very low velocities of small particles in a fluid, ______ causes the wall shear

Answer 7

Viscosity

Question 8

For aqueous Solution, the most important variable in natural-circulation evaporation is

Answer 8

Viscosity

Question 9

Leg support is meant for _______ vessels

Answer 9

small

Question 10

A major byproduct in the Hall electrometallurgical process for refining aluminum is

Answer 10

CO2 (g) from oxidation of the graphite anode

Question 11

Temperature differences in natural convection causes the fluid of different regions to have varying

Answer 11

Density

Question 12

If momentum transfer is analogous to conductive heat transfer resulting from a temperature gradient, where the thermal conductivity is the proportionality factor between heat flux and temperature gradient, what then is the proportionality factor between momentum flux and velocity gradient?

Answer 12

Viscosity

Question 13

Bayer Process for purifying bauxite relies upon the

Answer 13

Amphoteric nature of Al3+

Question 14

When the molal latent heat of vaporization of the binary system is very much dependent on concentration, the most appropriate method to use to determine the number of ideal stages is

Answer 14

Ponchon-Savarit Method

Question 15

It is caused by the transfer from higher concentration to low concentration region

Answer 15

Molecular Diffusion

Question 16

Which among the following is not transparent to gas radiation

Oxygen
Air
Water Vapor
Helium

Answer 16

Water Vapor

Question 17

The controlling resistance in a rotary drum vacuum filter is the ________ resistance

Answer 17

Cake

Question 18

In filtration, the finer the filtration medium is (the shorter/longer/does not affect) the constant rate period

Answer 18

the longer is

Question 19

A gaseous fuel in order to develop luminosity on burning must contain ______

Answer 19

Hydrocarbons

Question 20

The measure of the relative effectiveness of momentum and energy transport by diffusion in the velocity and thermal boundary layers is given by

Answer 20

Prandtl Number

Question 21

While starting a centrifugal pump, its delivery valve should be kept _____

Answer 21

closed

Question 22

The diameter of Raschig rings used in a packed tower in industry is normally around

Answer 22

2”

Question 23

The transport analogy among mass, heat, and momentum transfer is complete when

Answer 23

no convection flux or phase drift is involved

Question 24

The product of the two dimensionless group Nre and Npr is commonly called

Answer 24

Peclet Number

Question 25

Unbound moisture in granular and porous solid, moved through the interstices of the solid by a mechanism involving

Answer 25

Moisture diffusivity

Question 26

In terms of heat transfer, the use of a cooling yower is said to be more efficient and more economicsl compated to an ordinary heat exchanger since __________

Answer 26

temperature profiles of air and water can cross each other

Question 27

The ratio of internal resistance of a solid to the boundary layer thermal resistance is described by

Answer 27

Biot Number

Question 28

The ratio of Buoyancy forces to viscous forces

Answer 28

Grashof Number

Question 29

The line of action of the buoyant force passes through the center of gravity of the

Answer 29

displaced volume of the fluid

Question 30

A dimensionless number representing the ratio of heatbttansfer by motion of a fluid to heay transfer by thermal conduction

Answer 30

Peclet Number

Question 31

For sizing fine materials, the most suitable equipment is

Answer 31

Vibrating screen

Question 32

States that if two models ste geometrically, kinematically, and dynamicallu similar, all velocities and forces are in constant relationship at counterpart positions

Answer 32

Dimensional Theory

Question 33

A conveyor auxiliary device used to cut out the driving force when a belt conveyor jams

Answer 33

Cleaner