A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is

Mechanical Operations
A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is

0.6

0.4

0.1

None of these

0.6

0.4

0.1

None of these

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Mechanical Operations
As particle size is reduced

Screening becomes progressively easier

Capacity and effectiveness of the screen is increased

None of these

Screening becomes progressively more difficult

Screening becomes progressively easier

Capacity and effectiveness of the screen is increased

None of these

Screening becomes progressively more difficult

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Mechanical Operations
Fluid energy mill comes in the category of

Grinder

Ultrafine grinder

Crusher

Cutter

Grinder

Ultrafine grinder

Crusher

Cutter

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Mechanical Operations
For a non-spherical particle, the sphericity

Is always less than 1

Has the dimension of length

Is the ratio of volume of a sphere having the same surface area as the particle to the actual volume of the particle

Is defined as the ratio of surface area of a sphere having the same volume as the particle to the actual surface area of the particle

Is always less than 1

Has the dimension of length

Is the ratio of volume of a sphere having the same surface area as the particle to the actual volume of the particle

Is defined as the ratio of surface area of a sphere having the same volume as the particle to the actual surface area of the particle

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Mechanical Operations
To get ultrafine particles, the equipment used is a

Rod mill

Hammer crusher

Ball mill

Fluid energy mill

Rod mill

Hammer crusher

Ball mill

Fluid energy mill

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Mechanical Operations
Size reduction of moulding powders, waxes, resins & gums are done in a __________ mill.

Cage

Both A & B

Hammer

Neither A nor B

Cage

Both A & B

Hammer

Neither A nor B

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Mechanical Operations

Mechanical Operations As particle size is reduced

Mechanical Operations Fluid energy mill comes in the category of

Mechanical Operations For a non-spherical particle, the sphericity

Mechanical Operations To get ultrafine particles, the equipment used is a

Mechanical Operations Size reduction of moulding powders, waxes, resins & gums are done in a __________ mill.

Mechanical Operations
As particle size is reduced

Mechanical Operations
Fluid energy mill comes in the category of

Mechanical Operations
For a non-spherical particle, the sphericity

Mechanical Operations
To get ultrafine particles, the equipment used is a

Mechanical Operations
Size reduction of moulding powders, waxes, resins & gums are done in a __________ mill.