Describe a method to separate a mixture of common salt and sand.
How will you separate common salt, sand and iron filings from their mixture?
You are given a mixture of water, groundnut oil and common salt. How will you separate groundnut oil and common salt from it?
Answer in brief :
(a) How are mixtures formed?
(b) Why do we need to separate substances from their mixtures?
(c) Name the methods used to separate substances from mixtures.
(d) What is sublimation?