Rajesh Singh, Indu Gupta and, Sikha Sharma Solutions for Chapter: Chemical Reactions and Equations, Exercise 3: Long Answer Type Questions

What happens when a piece of 

Zinc metal is added to copper sulphate solution?

Also, write the balanced chemical equation, if reaction occurs.

What happens when a piece of Aluminium metal is added to dilute hydrochloric acid?

Also, write the balanced chemical equation, if reaction occurs.

What happens when a piece of Silver metal is added to copper sulphate solution?

Also, write the balanced chemical equation, if reaction occurs.

What happens when zinc granules are treated with dilute solution ${\mathrm{H}}_2{\mathrm{SO}}_4, \mathrm{HCI}, {\mathrm{HNO}}_3, \mathrm{NaCI} \mathrm{and} \mathrm{NaOH},$ also write the chemical equations, if reaction occurs?

On adding a drop of barium chloride solution to an aqueous solution of sodium sulphite, white precipitate is obtained.

Write a balance chemical equation of the reaction involved 

On adding a drop of barium chloride solution to an aqueous solution of sodium sulphite, white precipitate is obtained.

What other name can be given to this precipitation reaction ?

On adding a drop of barium chloride solution to an aqueous solution of sodium sulphite, white precipitate is obtained. On adding dilute hydrochloric acid to the reaction mixture, white precipitate disappears. Why ?

You are provided with two containers made up of copper and aluminium. You are also provided with solutions of dilute $\mathrm{HCl}$, dilute ${\mathrm{HNO}}_3, {\mathrm{ZnCI}}_2$ and ${\mathrm{H}}_2\mathrm{O}.$ In which of the container these solutions can kept?