A solution of copper sulphate was kept in an iron pot. After few days, the iron pot was found to have a number of holes in it. Explain the reaction with the help of a chemical equation.

A solution of copper sulphate was kept in an iron pot. After a few days, the iron pot was found to have a number of holes. Write the equation for the reaction that took place. Exlain in terms of reactivity.

When iron rod is kept dipped in copper sulphate solution for some time, a brown coating is formed on the iron rod. What change will be observed in the colour of the solution? Also write chemical equation for the reaction involved.

An aluminium can is used to store ferrous sulphate solution. It is observed that in few days holes appeared in the can. Explain the observation and write the chemical equations to support your answer.

Why does the colour of copper suphate solution change when an iron nail is dipped in it ? Write the chemical equation.

A copper plate was dipped into a solution of silver nitrate . After sometime , a black layer was observed on the surface of copper plate. State the reason for it and write chemical equation of the reaction involved.

Give the reaction involved during the extraction of zinc from its ore by a. Roasting of zinc or b. Calcination of zinc ore OR How are roasting and calcination used in the extraction of zinc? Explain with the help of chemical equations. After these processes is reduction necessary to obtain zinc? Why

The colour of copper sulphate solution changes when an iron nail is dipped in it. State the reason giving chemical equation for the reaction involved.

A few normal seedlings of tomato were kept in a dark room. After a few days were found to have become white coloured like albinos. Which of the following terms will you use to describe them?

In a thermite reaction, a compound of iron reacts with a metal : (i) Name the metal used in this reaction. (ii) After completion of this reaction, a metal is obtained in the molten state. Identify the metal. (iii) Represent this reaction in the form of a balanced chemical equation. (iv) Mention the most common use of this reaction.

Two carbon compounds A and B have the molecular formula CH, and C,H, respectively. Which one of the two is most likely to show addition reaction? Justify your answer. Explain with the help of a chemical equation how an addition reaction is useful in the vegetable-ghee industry.