Question

Mention a change which is always :-
(a) desirable
(b) undesirable
(c) periodic​

Answer 1

Answer:

: a solution in which the interaction between molecules of the components does not differ from the interactions between the molecules of each component usually : a solution that conforms exactly to Raoult's law — compare activity sense 6b, activity coefficient, fugacity sense 2b.

Answer 2

Answer:

hi

Explanation:

Changes that are useful to man are desirable changes, e.g. change of milk into curd. Undesirable : Change that brings about destruction is an undesirable change, e.g. floods and epidemics are undesirable changes.