14 Questions
What is the main reason for considering mixing as a critical factor in the manufacture of tablets or granules?
To ensure uniform distribution of additives
Which mechanism of powder mixing involves the dispersion of solid particles in each other by moving them from one position to another?
Convective mixing
In powder mixing, which factor determines the predominance and extent of each mixing mechanism?
Flowability of the powder components
What type of mixing occurs when a 'layer' of material moves or flows over another 'layer'?
Shear mixing
Which type of mixing is essential in the manufacturing process of tablets or granules?
Solid/Solid mixing
What is the primary reason for adding additives in the mixing process for tablets or granules?
To enhance the flowability of the powder components
Which factor can enhance flow and improve mixing efficiency?
Particle size and size distribution
What can lead to segregation upon mixing?
Particle size and size distribution
Which type of particles possess attractive forces such as Van Der Waals, electrostatics, and surface tension resulting in cohesion and poor flow properties?
Very fine particles
What is the reason for poor flowability due to friction?
Rough surface particles
What accelerates de-mixing (segregation) when the smaller particles have a higher density?
Particle density
What can neutralize similar charges on the particles to overcome segregation due to repulsion or attraction?
Adding wetting agent
How can the best homogeneous mixture be obtained?
Mixing in equal proportions (1:1)
What type of mixing indicates that each particle of one component lies as nearly as possible in contact with a particle of each of the other?
Perfect (Ideal) mixing
Test your knowledge of mixing classification based on energy requirements and nature of mixed materials. Learn about positive mixing, negative mixing, and neutral mixing, as well as solid/solid, liquid/liquid, and liquid/solid mixing.
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