Question

Gold solution is not:
A) A lyophobic colloid
B) Negatively charged colloid
C) A macromolecular colloid
D) A multimolecular colloid

Answer 1

Hint: These sols are not made just by consolidating the substances with the mechanism for scattering. These are not steady, for example at the point when a modest quantity of electrolyte is applied to them or when they are warmed or shaken, these sols are easily coagulated. Lyophobic sols can be settled because of the adsorption of particles by the scattered particles. They are irreversible in nature.

Complete step-by-step answer:Multimolecular colloids contain a large number of particles as totals, e.g., sulfur sol.
Macromolecular colloids comprise of one single huge size particle as a scattered phase, e.g., polythene.
Colloidal gold is a sol or colloidal suspension of nanoparticles of gold in a liquid, usually water. The colloid is typically either an extreme red tone or blue/purple (for bigger round particles or Nano rods). Due to their optical, electronic, and sub-atomic acknowledgment properties, gold nanoparticles are the subject of considerable examination, with numerous potential or guaranteed applications in a wide assortment of zones, including electron microscopy, hardware, nanotechnology, materials science, and biomedicine.
Gold sol is a multimolecular colloid since an enormous number of atoms join to shape the colloidal particles. It is a negatively charged and lyophobic sol.

Hence the correct option is C).

Note:The properties of colloidal gold nanoparticles, and accordingly their likely applications, rely unequivocally on their size and shape. For instance, rod-like particles have both transverse and longitudinal assimilation peaks, and anisotropy of the shape influences their self-assembly.