In what form is the calcined ore obtained and how can it be reduced? Give chemical equtions of the reduction process involved for the example given to you .

For the metallurgical process of the ores calcined ore can be reduced by carbon ?

How will you convert pyrolusite ore into potassium permanganate ? Give the chemical reactions only.

In one of the industrial processes used for manufacture of sodium hydroxide, a gas ‘X’ is formed as a by-product. The gas ‘X’ reacts with lime water to give a compound ‘Y’ which is used as a bleaching agent in the chemical industry. Identify ‘X’ and ‘Y’ giving the chemical equations of the reactions involved.

Give the reactions involved during extraction of zinc form its ore by calcination of zinc ore.

What type of ores are calcined? Illustrate giving a suitable example.

How can you find out whether a given amine is a primary amine ? Write the chemical reaction involved in the test you perform.

What are antitranspirants?Give example.How do they reduce transpiration?