Take 5 mL of sodium sulphate solution in a test tube and 5 mL of barium chloride solution in another test tube. When the two solutions are mixed slowly and the test tube is left undisturbed for some time, a white precipitate is formed. Which of the following statements is correct about the above reaction?
(A) lt is a double displacement reaction since exchange of ions occurs between the two reactants.
(B) lt is a combination reaction since barium ions combine with sulphate ions to give barium sulphate.
(C) lt is a displacement reaction since chloride ions are replaced by sulphate ions.
(D) lt is a neutralisation reaction since an acid reacts with alkali to give a salt.
