Q1: For a ternery mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a __________ of the equilateral triangular co-ordinates.

ANS:D - pure component is represented by the apex.

In an equilateral triangular coordinate system used for representing ternary mixtures in leaching and extraction, pure components are represented by the apexes of the triangle, not by any point inside. Here's the correct explanation: In an equilateral triangular coordinate system, each corner of the triangle represents a pure component of the ternary mixture. The three corners correspond to the three pure components in the mixture. For example, if the ternary mixture consists of components A, B, and C, the three corners of the triangle would represent pure A, pure B, and pure C, respectively. The interior points of the triangle represent compositions that are mixtures of the three components in varying proportions. Each point inside the triangle corresponds to a specific composition of the mixture, with the proportions of the components varying based on the distance from the corners.