$4$

$\frac{4}{5}$

Across

Parameter of unit expressed on the $x$ axis of frequency distribution curve $(13)$

Term used to represent the most common diameter. $(4)$

An analytical piece of equipment able to measure particles down to approx $5um.(18)$

Process by which fine particles are separated from bigger particles. $(7)$

Term used to describe bulk material with grain size greater than $4\mathrm{.}75mm.(15)$

Down

Is a free flowing spherical unit prepared from fine particle powder $(6)$

The breakdown of solid particles size with the application of force exerted.

$(11)$

One of six inter$-$particulate forces that exist $(20)$

A mechanism that causes combining of particles when they are suspended in a fluid $(20)$

One of several processes commonly used for size enlargement $(19)$

Atype of solid bridge $(18)$

Is defined as a regular shaped particle $(6)$

Is the terminolgy used for particle size reduction of range $100um.(13)$