The CMC of a given soap in water is $\;10^{-3}\;molL^{-1}\;.$ A $\;10^{-4}\;molL^{-1}\;$ solution of this soap in water is a

$(a)\;lyophilic\;sol\qquad(b)\;lyopholic\;sol\qquad(c)\;true\;solution\qquad(d)\;None\;of\;these$

Answer : true solution
Explanation :
As the concentration of soap $\;(10^{-4}\;mol L^{-1})\;$ is less than its CMC value $\;(10^{-3}\;mol L^{-1})\;$ , the soap in water will form a true solution .
answered Mar 18, 2014 by