The reaction of sodium sulphate and barium chloride solution is an example of-

Correct option is A

The correct answer is (a) Double displacement reaction.
· The reaction between sodium sulphate (Na2SO4) and barium chloride (BaCl2​) is a double displacement reaction. It results in the formation of barium sulphate (BaSO4​) and sodium chloride (NaCl). The equation for the reaction is:
Na2SO4+BaCl2→BaSO4↓+2NaCl
In this reaction, the sulphate (SO₄²⁻) ion from sodium sulphate and the barium (Ba²⁺) ion from barium chloride exchange places, forming a precipitate of barium sulphate.
Information Booster:
· Double Displacement Reaction: Also known as a metathesis reaction, it involves the exchange of ions between two compounds to form new compounds.
· Precipitate Formation: Barium sulphate is an insoluble salt, forming a white precipitate in this reaction.
· Single Displacement Reaction: Involves one element displacing another in a compound, which is not the case here.