Related Questions

Brownian movement is prominent in the particle size range of __________ microns in case of settling of a particle in a fluid.
A 2 to 3
B 0.01 to 0.10
C 200 to 300
D 100 to 1000
Q.(1-4): Answer the questions on the basis of the information given below. * F,G and H are insurance companies , Q,R,S and T are private detectives .Each detective works for at least one of the insurance companies. * Q always works for F and at least one of the other companies. Some of the time G employs only one of these detectives,' the rest of the time it employs exactly two of them. *F and H each employ exactly two of these detectives all the time. If R works for H only, and if S works for G and H only, T works for--
A F only
B G only
C H only
D both F and G
For a particle settling in water at its terminal settling velocity, which of the following is true?
A Buoyancy = weight + drag
B Weight = buoyancy + drag
C Drag = buoyancy + weight
D Drag = weight
Drag co-efficient in hindered settling is __________ that in free settling.
A Less than
B Equal to
C Not necessarily greater than
D Always greater than
Dust in a computer actually increases the size of the magnetic fields inside it. This is not good, so you must occasionaiy dust, I trust. What's the best way to do this?
A reverse vacuum
B any small vacuum device
C blow real hard on the system board
D use a lint-free cloth and wipe gently
E non-static compressed air
If Arif works alone he will take 20 more hours to complete a task than if he works with Babu to complete the task. If Babu work alone, he will take 5 more hours to complete the task than if he works with Arif to complete the task. What is the ratio of the time taken by Arif to than taken by Babu if each of them works alone to complete the task?
A 2 : 1
B 5 : 3
C 7 : 5
D None of these
For motion of spherical particles in a stationary fluid, the drag co-efficient in hindered settling compared to that in free settling is
A More
B Less
C Equal
D More or less, depending on the type of particle
Electro-magnetic spectrum range, which is important for radiation varies from __________ microns.
A 1 to 100
B 0.5 to 50
C 10 to 100
D 100 to 1000
The range of electromagnetic spectrum important in heat transfer by radiation is __________ microns.
A 0.38-0.78
B 0.5-50
C 100-1000
D 5-50
In a grinding operation, the limiting particle size is the size of the __________ particle in the sample.
A Smallest
B Largest
C Either A or B
D Neither A nor B

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