How will you separate a mixture of naphthalene powder and common salt? Draw a neat and labelled diagram to show the process.

(N/A) To separate a mixture of naphthalene powder and common salt,we use the process of sublimation.
$1$. Place the mixture in a china dish.
$2$. Invert a glass funnel over the china dish.
$3$. Plug the stem of the funnel with a cotton plug to prevent the vapours from escaping.
$4$. Place the china dish on a tripod stand and heat it using a burner.
$5$. Naphthalene,being a sublimable substance,directly converts into vapours upon heating,while common salt remains in the china dish.
$6$. The naphthalene vapours condense on the cooler inner walls of the funnel and can be scraped off,leaving pure common salt in the china dish.