Dr. S P Jauhar and R Jauhar Solutions for Chapter: Metals and Non-Metals, Exercise 1: Revision Exercise

What is the nature of the oxides of metals?

Why do shopkeepers apply oil on the tools made of iron while storing them?

Name a method for obtaining the metals of high purity.

What is the formula of bauxite?

Which of the following reactions is possible?

(i) ${\mathrm{ZnSO}}_4\left(\mathrm{aq}\right)+\mathrm{Cu}\left(\mathrm{s}\right)\to {\mathrm{CuSO}}_4\left(\mathrm{aq}\right)+\mathrm{Zn}\left(\mathrm{s}\right)$

(ii) $\mathrm{Zn}\left(\mathrm{s}\right)+{\mathrm{CuSO}}_4\left(\mathrm{aq}\right)\to {\mathrm{ZnSO}}_4\left(\mathrm{aq}\right)+\mathrm{Cu}\left(\mathrm{s}\right)$

What would happen if zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.

What is meant by a reactive series of metals? Arrange the following metals in the increasing order of their reactivity towards water:

Zinc, iron, magnesium, sodium

Give the chemical formula and name of the metals whose ores are the following:

(a) Bauxite      (b) Limestone     (c) Gypsum

(d) Cryolite      (e) Calcite           (f) Borax

(g) Malachite   (h) Magnetite