Question

One small crystal of potassium permanganate can colour large volumes of water. This proves that
(A) matter is made up of wave
(B) matter is made up of tiny particles
(C) matter is made up of large particles
(D) matter cannot be divided further

Answer 1

The process of adding the concentrated material to the known volume of another solution until the reaction reaches the neutralization, when it is indicated by the change of colour. The process is titration. By doing this process the colour of the solution will change.

Complete step by step answer:

Take one beaker with the $100\,ml$ of water, add some potassium permanganate in the water and dissolve it until the colour of the water changes. After the colour of the water changes, take $10\,ml$ of the coloured solution and add this $10\,ml$ of the coloured solution to the $90\,ml$ of the water. By comparing the two solutions, the thickness of the colour of the solution is different. By doing this process repeatedly for some times or $8$ to $10$ times, after the solution colour will not change. This is because the crystal of the potassium permanganate is dissolved. There is no more crystal present to change the colour of the water.
This experiment shows that the few crystals of the potassium permanganate have the ability to colour the limited amount of the water, after that it will not colour the water. This process proves that the matter is made up of tiny particles. So, there are a million tiny particles in one crystal of potassium permanganate.

Note:
Potassium permanganate is a common chemical compound that contains the combination of the manganese oxide ore with potassium hydroxide. In some industries potassium permanganate is used to treat the water to remove the iron and hydrogen sulphide.