A house wife gave someof her gold ornaments to a person for polishing.The person became happy. He conducted some chemical reactions and returned the polished ornaments.Name the solvent used to dissolve gold.

A house wife gave some of her gold ornaments to a person for polishing . The person became happy, He conducted some chemical reactions and returned the polished ornaments. [Hint: - The person became happy because he got some gold in the 'dissolved form] a. Name the solvent used by the person to dissolve gold. b. Explain the chemistry of the reaction: c. How the person has recovered the dissolved goId from the solution?

The names of some metals are given below. Tungsten, Gold, Sodium, Copper, Iron, Magnesium Answer the following questions by selecting the appropriate ones from the list. Which metal with high malleability is used for making ornaments? Which of these metals reacts with cold water? Which of these is a hard metal but corrodes easily?