Pumice stone is an example of -
gel
solid sol
foam
sol
Pumice stone is an example of a colloidal system known as a solid sol. In chemistry, a solid sol consists of solid particles dispersed in a solid medium. This type of colloid retains the shape of the solid while incorporating dispersed phase particles, often with unique characteristics such as porosity or lightness, as seen in pumice stones. Thus, the correct classification of pumice stone is a solid sol.
Given below are two statements:
Statement I: Transfer RNAs and ribosomal RNA do not interact with mRNA.
Statement II: RNA interference (RNAi) takes place in all eukaryotic organisms as a method of cellular defence.
In the light of the above statements, choose the most appropriate answer from the options given below:
A solution is a homogeneous mixture of two or more components in which the particle size is smaller than 1 nm.
For example, salt and sugar is a good illustration of a solution. A solution can be categorized into several components.
The solutions can be classified into three types:
On the basis of the amount of solute dissolved in a solvent, solutions are divided into the following types: