Question

An element A burns with golden flame in air. It reacts with another element B, atomic number 17 to give a product C. An aqueous solution of product C on electrolysis gives a compound D and liberates hydrogen. Identify A, B, C and D. Also write down the equations for the reactions involved.

OR

Two ores A and B were taken. On heating ore A gives CO₂ whereas, ore B gives SO₂. What steps will you take to convert them into metals?

Answer 1

Since ore A gives CO₂ and ore B gives SO₂, therefore, ores are MCO₃ and MS.

As A is a carbonate ore, it is first subjected to calcination followed by reduction.

As B is a sulphide ore, it is first subjected to roasting followed by reduction.