$A$ mixture of iodine and sodium sulphate is separated by:

Draw a diagram showing the setup of the apparatus for the process. Draw a diagram of a bubble plate type fractionating column. When do we require such a type of column for separating two liquids? Explain the principle involved in the separation of components of a mixture of liquids by using a fractionating column. What industrial applications does this process have?

What is an element?

Which is the best method to separate a mixture of benzoic acid and naphthalene?

One sample of atmospheric air is found to have $0.03\%$ of carbon dioxide and another sample $0.04\%$. This is evidence that

$A$ mixture of sand and sulphur may best be separated by: