Madhya Pradesh Board Solutions for Chapter: Chemical Reactions and Equations, Exercise 4: EXERCISES

Write the balanced equation for the following chemical reaction and identify the type of the reaction:
Hydrogen $+$ Chlorine $\to$ Hydrogen chloride

Write the balanced chemical equation for the following and identify the type of reaction in each case.
$\mathrm{Magnesium}\left(\mathrm{s}\right) + \mathrm{Hydrochloric} \mathrm{acid}\left(\mathrm{aq}\right) \to \mathrm{Magnesium} \mathrm{chloride}\left(\mathrm{aq}\right) + \mathrm{Hydrogen}\left(\mathrm{g}\right)$

Explain reduction in terms of gain or loss of oxygen with two examples.

A shiny brown coloured element ‘X’ on heating in air becomes black in colour. Name the element ‘X’ and the black coloured compound formed.

Why do we apply paint on iron articles?

Oil and fat containing food items are flushed with nitrogen. Why?

Explain corrosion with one example.

Explain the term rancidity with one example.