Question

You are given a mixture of sand + water + mustard oil how will you separate them

Answer 1

First, Separate out oil and sandy water by using a separating funnel. Then remaining mixture can be separated by sedimentation and distillation.

Answer 2

Filter the mixture, sand will remain on filter paper.
Then pour the mixture of mustard oil and in seperating funnel.
Water will settle down at bottom and mustard oil will float on it.
Then open the stopcock of the seperating funnel and pour out the lower layer of water.
Mustard oil will remain in the seperating funnel.