Give a chemical test to distinguish between
dilute sulphuric acid and dilute hydrochloric acid.

Explanation

Barium chloride `(BaCl_2)` solution is taken in two test tubes marked A and B. 
(i) When dilute sulphuric acid is added to barium chloride solution, a white precipitate of barium sulphate is formed, which is insoluble in acids.
`BaCl_2(aq) + H_2SO_4(aq) to BaSO_4(s) + 2HCl(aq) `
(ii) When dilute hydrochloric acid is added to barium chloride solution, no precipitate is formed.
`BaCl_2(aq) + 2HCl(aq) to`  No precipitate