Give reasons: Carbonate and suphide ores are usually converted into oxides during the process of extraction

T/F Carbonate and sulphide ores are usually converted into oxides.

Why are sulphide ores converted to oxide before reduction ?

T/F A sulphide ore is converted into its oxide to extract the metal.

Complete the following statement- Plants absorb carbon dioxide during the process of-

Give the reasons for the following statements: Water along with dissolved organic and inorganic substances is excreted during the process of bleeding.

Name an oxide ore of a aluminium and carbonate ore of zinc.

A metal carbonate X on reacting with an acid gives a gas which when passed through a solution gives the carbonate black. On the other hand, A gas G that is obtained at anode during electrolysis of brine is passed on dry Y, it gives compound Z, used for disinfecting water. Identify X, Y, G and Z.

Give the reason for the following statements: During the process of swallowing of food bolus,respiration stops for a moment.