The process of pouring out the upper layer of clear liquid without disturbing sediment is called__________.
Decantation
Explanation of correct option :
(C) Decantation: This method is used for the separation of two isolating immiscible liquids or the separation of an insoluble solid from a liquid in a mixture.
Explanation of incorrect option :
(A) Sedimentation: it is the process of settling of heavier particles of the mixture under the effect of gravity.
(B) Evaporation: It is the process of conversion of a liquid into vapour below its boiling point.
(C) Distillation: This process is used for the separation of miscible liquids having a difference in their boiling points.
Thus, the correct option is (C) i.e. decantation.