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# At which point of lyophilic colloids , they are expected to have minimum stability ?

$(a)\;prilling\;point\qquad(b)\;triple\;point\qquad(c)\;isoelectric\;point\qquad(d)\;dielectric\;point$

The $\;H^{+}\;$ ions concentration at which the colloidal particles are neither positively charged nor negatively charged (i . e ; are electrically neutral) is known as isoelectric point of a colloid .