Write the symbol of Gold, Aluminium, silver, potassium, sodium, calcium.
Write the balanced chemical equations for the following reactions. (A) Calcium hydroxide + Carbon dioxide → Calcium carbonate + water (B) Zinc + Silver nitrate → Zinc nitrate + Silver (C) Aluminium + copper chloride → Aluminium chloride + Copper (D) Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride.
The figure represents the reactivity of metals then which of the following are correct?
(i) Sodium is more reactive than magnesium.
(ii) Magnesium ad aluminium metals displace lead.
(iii) Magnesium and aluminium metals displace calcium.
(iv) Iron and tin metals can displace magnesium.
(v) Most reactive metal is sodium.
(vi) Gold is least reactive.
(vii) Calcium and zinc metals displace iron.