centrifugation and meterials of pharmaceutical plant

Which is the principle difference (in the properties) that influences centrifugationi.Particle

• Densities

• Interfacial tension

• Viscosities

• Particle size

A centrifugal method is used for one of the following forces

• Mixing

• Purification

• Separation

• Sizing

Which one of the following forces greatly enhances the separation forces?

• Brownian forces

• Centrifugal forces

• Gravitational forces

• Van der Waals forces

What are the two factors responsible for separation by centrifugation?

• Density & sedimentation force

• Density & speed of rotation

• Diameter & speed of rotation

• Speed of rotation & sedimentation force

Centrifugation is useful in one of the following types of dispersions

• Coarse dispersions

• Colloidal dispersions

• Molecular dispersions

• Multi – Size dispersions

Centrifugation based on which of the following law?

• Pascal’s law

• Stokes law

• Stain law

• Patrick’s law

Which process is widely used in the dairy industry?

• Crystal growth

• Centrifugal separation

• Distillation

• Evaporation

State the factors that affect centrifugation.

• Liquid viscosity

• Particle size distribution

• Type and shape of particle

• all of the above

One of the following glass containers is used for the storage of light-sensitive pharmaceuticals

• Airtight

• Amber colour

• Unit dose

• Well closed

Which one of the following materials are used for the construction of the outer surface of the jacket of steam pans, because of its low thermal conductivity?

• Carbon steel

• Cast iron

• Copper

• Stainless steel