KVV E-Modules

If given material is fibrous in nature which mill will you prefer?

A: Ball mill B: Fluid energy mill C: Hammer mill D: Cutter mill

Which of the followings mill include screen as an integral part of size reduction?

A: Ball mill B: Hammer mill C: Edge runner mill D: Colloid mill

Ball mill works on the principle of ---------

A: Attrition and cutting B: Impact C: Impact and attrition D: Cutting

Hammer mill works on the principle of -----------

A: Attrition and cutting B: Impact C: Impact and attrition D: Cutting

Choose the correct theory that explains the size reduction of large particles by compression modes

A: Bond’s theory B: Griffith theory C: Kicks theory D: Rittinger’s theory

The term ‘comminution’ refers to:

A: Mixing of powders B: Reduction of particle size C: Separation of solids D: Drying of materials

Which material is most suitable for size reduction by cutting?

A: Brittle materials B: Fibrous materials C: Hard crystalline materials D: Moist powders

Why is size reduction important in pharmaceutical manufacturing?

A: To increase the hardness of tablets B: To enhance dissolution and bioavailability C: To reduce the drug potency D: To prevent mixing of powders

Size reduction improves the stability of suspensions by:

A: Increasing particle size B: Decreasing sedimentation rate C: Increasing density D: Reducing surface area

Why is size reduction necessary before extraction in herbal drug processing?

A: To change color B: To increase the surface area for solvent contact C: To improve taste D: To reduce potency