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What do you understand by the term “Redox Reactions”?

Answer - When oxidation and reduction take place simultaneously in a given chemical reaction, it is called redox reaction or oxidation-reduction.

What is the Definition of Redox Reactions ?

Answer - When oxidation and reduction take place simultaneously in a given chemical reaction, it is called redox reaction or oxidation-reduction.

What do you understand by the term “Redox Reactions”? Explain with one example.

Answer - 1.     When oxidation and reduction take place simultaneously in a given chemical reaction, it is called redox reaction or oxidation-reduction. 2.     No oxidation can take place without reduction and there is no reduction without oxidation at the same time. 3.   When carbon monoxide is passed over heated ferric oxide, carbon monoxide gains oxygen (i.e. gets oxidized) to form carbon dioxide. At the same time, iron oxide gets reduced to metallic iron by the loss of oxygen. 4.     Fe 2 O 3  + CO → 2Fe +2CO 2  ↑

What is corrosion? TechnoMayur

Answer - The slow process of decay or distinction ions of a metal due to the effect of air, moisture, acids, alkalies, or other chemicals on it is called corrosion.

What is corrosion? Do gold ornaments corrode? Justify.

Answer -  1.   The slow process of decay or distinction ions of a metal due to the effect of air, moisture, acids, alkalies, or other chemicals on it is called corrosion. 2.  Ordinarily, gold ornaments do not get corroded. 3.  Gold is one of the least reactive metals. It does not react with air, moisture, sweat, or ordinary pollutants in air or water. Hence, it does not get corroded.

Give Reason : Grills of doors and windows are always painted before they are used.

Answer - 1.  Usually grills of doors and windows are made of iron. 2.    Iron objects get rusted on exposure to moist air. 3.  Since air always contains moisture, iron grills get rusted. 4.   Painting iron objects prevents rusting, hence iron grills of doors and windows are painted before they are used.