PT317_093_Mcq on mixing-2

__________ are mixed using ribbon blenders.

• Lumpy solids and low viscosity liquids

• Dry powders

• High viscosity liquids

• Thick pastes

Sigma blade mixers are commonly used in

• Wet granulation

• Crude fibre mixture

• Dry granulation

• Powder mixture

mixing of semisolids is carried out using

• Double cone mixer

• Rotating cube mixer

• Planetary mixer

• Fluidized bed mixer

Which type of action is required for wet granulation, when planetary mixer is used?

• Agitator action

• Blending action

• Kneading action

• none of the above

Colloidal mills are used for __________ grinding.

• Coarse

• Intermediate

• Fine

• Ultrafine

Colloid mill is based on the principal of:

• attrition

• impact

• shearing

• compression

Ribbon blenders are exclusively meant for

• Blending miscible liquids

• Non-flowing powder and thin pastes

• Bath mixing

• Continuous mixing

Which of the following are the advantages of using planetary mixer?

• Proper mixing is guaranteed.

• Higher densities of the product can be developed by using it.

• It only requires low maintenance.

• It reduces manual labor and prolonged mixing time for other types of mixers.

The energy consumption of a colloid mill depends on which of the following factors

• The viscosity of the product

• Feed rate

• The temperature during processing.

In ribbon blender, the mixing of particles is

• Two dimensional

• Three dimensional