24-04-2023 (1 hr) Centrifugation

The main principle of centrifugation process is the sedimentation under

• centrifugation force

• sedimentation force

• filtration process

• None of these

Centrifugation is used to separate the ------------ by using the principle of centrifugal force

• components of a heterogeneous mixture

• components of a heterogeneous mixture of colloidal particles from the solvent

• components of a colloidal particles from the solvent

• None of these

The ultimate choice of the type of centrifuge depends on the

• Precipitation

• centrifugal force

• type of application and effectiveness

• end product

In recent years, ----------- have been developed

Tags

NGSS.HS-ETS1-3

NGSS.HS-PS3-3

In tubular centrifuge, the system is applied for the separation of particles having dimension of 0.1μm to 200 μm in diameter and for a liquid having solid load of ----------

• only 0.1 % or less

• only 15% or less

• only 10% or less

• only 0.8% or less

Disc bowl centrifuge system consists of a central inlet pipe and a system of conical disc, made-up of ----------

• Plastic

• stainless steel

• Glass

• None of these

The rotational speed of disc bowl centrifuge ranges from -----------.

• 5000 rpm to 10000 rpm

• 3000 rpm to 5000 rpm

• 1000 rpm to 3000 rpm

• 2000 rpm to 10000 rpm

In multi chamber system, the separation of particles having dimension of ----------

• 0.1μm to 100 μm in diameter.

• 0.1μm to 200 μm in diameter.

• 0.1μm to 150 μm in diameter

• 1μm to 300 μm in diameter

System is used in continuous mode for the separation of solids from the fermentation broth in--------

• Tubular type

• Disc type

• Decanter type

• Multi chamber type

Tags

NGSS.HS-ETS1-3

In which system solid particles sediment on the wall of the rotor and the two liquid phases get separated into two distinct zones?