When water is added to a white powder 'A' vigorous rection takes place and a large amount of heat is released. 'A' is also used for white washing. Identify 'A' write a chemical equation for itts reaction with water and name the product.

Write chemical equations for the reactions taking place when: Steam is passed over hot iron.

Write chemical equations for the reactions taking place when: Zinc carbonate is calcined.

A solution of substance 'X' is used for white washing. Write the reaction of the substance X named in above with water.

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

Pratyush took sulphur powder on a spatula and heated it. He collected the gas evolved by invent a test tube over it, as shown in the figure below: Write a balanced chemical equation for reaction taking place.

What happens when a piece of Aluminium metal is added to copper sulphate solution? Also, write the balanced chemical equation if the reaction occurs

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.