Why does calcium metal after reacting with water starts floating on its surface? Write the chemical equations for the reaction.

Write the chemical equation for Cannizaro’s reaction.

Write the chemical equation for the reaction of Zn with Oxygen.

Write the chemical equations when: Zinc reacts with cone. HNO_3

A metal carbonate X, and a metal bicarbonate Y on reacting with an acid gives a gas which turns lime water milky. Write the chemical equatins for the reaction of X and Y with the acid.

Solid calcium oxide was taken in a container and water was added slowly to it. Write the balanced chemical equation of this reaction.

Identify the compound of calcium which is yellowish white powder and is used for disinfecting drinking water. Write its chemical name and formula. How is it manufactured? Write the chemical equation for the reaction involved. Also list two other uses of the compound.