# Which of the following phrases correctly explains syneresis ?

$(a)\;weeping\;of\;gels\qquad(b)\;thioxotropy\qquad(c)\;weeping\;of\;sols\qquad(d)\;coagulation\;of\;sols$

Explanation :
When gels are allowed to stand for a long time , they give out small amount of trapped liquid which accumulates on its surface . This phenomenon is called syneresis or weeping of gels .