Classical Idea of Redox Reactions

With the depletion of the ozone layer, UV radiations lead to ageing of the skin, cataracts, sunburn, skin cancer, killing of many phytoplanktons, damage to _____ productivity etc.

With the depletion of ozone layer, more UV radiation filters into stratosphere.

What are the effects of depletion of the ozone layer?

Which of the following reactions involved removal of an electronegative element

$2{\mathrm{FeCl}}_3+{\mathrm{SO}}_2+2{\mathrm{H}}_2\mathrm{O}\to 2{\mathrm{FeCl}}_2+{\mathrm{H}}_2{\mathrm{SO}}_4+2\mathrm{HCl}$

The above reaction involves the removal of an _____ chlorine atom.

Consider the reaction.

${\mathrm{MnO}}_2\left(\mathrm{s}\right)+4\mathrm{HCl} \to {\mathrm{MnCl}}_2\left(\mathrm{aq}\right) + {\mathrm{Cl}}_2\left(\mathrm{g}\right) + 2{\mathrm{H}}_2\mathrm{O}$

Identify the oxidation and reduction reaction in the above equation.

Give the difference between oxidation and reduction with examples.

Identify the substance that is oxidised and substance that is reduced in the following reaction.

$\mathrm{CuO}\left(\mathrm{s}\right) + {\mathrm{H}}_2\left(\mathrm{g}\right) \to \mathrm{Cu}\left(\mathrm{s}\right) + {\mathrm{H}}_2\mathrm{O}\left(\mathrm{I}\right)$

Identify the substance that is oxidised and substance that is reduced in the following reaction.
$4\mathrm{Na}\left(\mathrm{s}\right) + {\mathrm{O}}_2\left(\mathrm{g}\right) \to 2{\mathrm{Na}}_2\mathrm{O}\left(\mathrm{s}\right)$

Write differences-

Oxidation-Reduction.

What do you mean by oxidation-reduction? Explain with examples.

Identify oxidation-reduction in the following reaction.

$\mathrm{Mg}+{\mathrm{Cl}}_2\to {\mathrm{MgCl}}_2$

Identify oxidation-reduction in following reaction.

 $\mathrm{C}+{\mathrm{O}}_2\to {\mathrm{CO}}_2$

Conversion of   into   is called

This question given in the book seems to have an error and the modified question is given below.

Conversion of ${\mathrm{FeCl}}_3$ into ${\mathrm{FeCl}}_2$ is called- 

Which of the following reaction does not involve oxidation and reduction?

In partial oxidation; alcohols are converted into _____.

Which of the following can act as oxidizing as well as reducing agent?

Name the gas in air which tarnishes silver articles slowly. (Hydrogen sulphide/Carbon dioxide)

Explain the following term:

Ozone hole

Which of the following statement(s) is/are not true about the following decomposition reaction?

$2\mathrm{K}\mathrm{C}\mathrm{l}{\mathrm{O}}_3\to 2\mathrm{K}\mathrm{C}\mathrm{l}+3{\mathrm{O}}_2$

(i) Potassium is undergoing oxidation

(ii) Chlorine is undergoing oxidation

(iii) Oxygen is reduced

(iv) None of the species are undergoing oxidation or reduction