Which one of the following is a lyophilic colloid?

$Fe(OH)_3$ sol is:

Which is a colloidal solution containing carbon,arsenic compounds and dust in air?

$A$ negatively charged suspension of clay in water will need for precipitation the minimum amount of

Identify the correct statement regarding lyophilic colloids from the following.

Identify the option having the correct set of True $(T)$ or False $(F)$ statements with respect to colloidal solutions:
$(I)$ Lyophobic colloids are heavily solvated by the dispersion medium.
$(II)$ Multimolecular colloids are usually lyophilic.
$(III)$ Surface tension of a starch aqua sol will be lesser than that of water.
$(IV)$ Blood gets coagulated by the addition of $NaCl$.