Question

Write balanced chemical equation for the following word equation. Lead nitrate + Potassium iodide → Lead iodide + Potassium nitrate Is this a double displacement reaction ? Justify your answer. Name the compound precipitated and write the ions present in it.

Write the method of preparation of Ca(OH)₂. What happens when CO₂ is passed through it ? Write balanced chemical equation for the reaction involved.

Which one of the following reactions is different from the remaining three ?

When a few drops of Barium chloride solution are added to an aqueous solution of Sodium sulphate, a white precipitate is obtained.