Question

What method to separate the iodine and sand

Answer 1

By the method of sublimation we can separate iodine from sand because iodine is sublimate substance.

Answer 2

Here is your answer

To separate a mixture of sand and iodine:-
Add some hexane to the mixture and dissolve the iodine out of the mixture, leaving the sand behind.
Heat the mixture of sand and iodine.

Hope it helps you