Dr. S P Jauhar and R Jauhar Solutions for Chapter: Metals and Non-Metals, Exercise 2: TEST YOURSELF

An element forms an oxide ${\mathrm{A}}_2{\mathrm{O}}_3$ which is acidic in nature. Identify A as a metal or non metal?

Name the solvent in which ionic compounds are generally soluble.(water/alcohol)

Which of the following reaction does not occur:

Ferrous sulphate crystals are dissolved in water. The colour of the solution is.

Two beakers A and B contain iron (II) sulphate solution. In the beaker A, a small piece of copper and in the beaker B a small piece of zinc are placed. It is found after some time that a grey deposit forms on zinc but not on copper. From these observations it can be concluded that:

Write chemical equation for the following reaction.
 Zinc carbonate is heated in the absence of air.

Write chemical equations for the following reactions.

A mixture of ${\mathrm{Cu}}_2\mathrm{O}$ and ${\mathrm{Cu}}_2\mathrm{S}$ is heated.

A metal M does not liberate hydrogen from acids but reacts with oxygen to give a black coloured product. Identify M and black coloured product and also explain the reaction of M with oxygen.