Question

Dialyser is a name given to which of the following:
A) lyophilic colloids.
B) lyophobic colloids.
C) to a membrane which can separate colloids from the solution.
D) none of the above.

Answer 1

Hint: Dialyser can be referred to as a type of an artificial fiber that contains even finer fibers and is generally used for separation.
We can see its properties and check which among the options can be called a dialyser.

Complete answer:
Colloids: These are a mixture of two substances in which minute particles of one substance called colloidal particles are suspended over the other substances.
The colloidal particles are ‘dispersion phase’ and the substance over which they are suspended is called ‘dispersion medium’.
The properties of a dialyser are:
> The pores present on this fiber are microscopic (very small) and hollow.
> It is a semi-permeable membrane (only allows certain substances to pass through it).
Now, Phile means having an affinity for (loving) whereas phobic means hating.
So, In lyophilic colloids, there is a strong affinity between the dispersion phase and the medium. In lyophobic colloids, there is either none or less affinity between the dispersion phase and medium.
Neither of the options possesses the quality of a dialyser, options A) and B) are canceled.
> As dialyser is a semi-permeable membrane (from properties), it is capable of separating colloids from the solution by the process of diffusion.
Therefore, Dialyser is a name given to a membrane that can separate colloids from the solution.

Hence the correct option is C).

Note: Dialyser is a word derived from dialysis which is a process of separation of particles through diffusion where the particles are moved from an area of higher concentration to that of a lower concentration.
It is also used for removing waste from solutions as it is a semi-permeable membrane