Question

1. products obtained when iron nail is dropped into copper sulphate solution

2. the reaction in which 2 compounds exchange their iron and one of the product formed is insoluble

3. compound formed when reverse reaction takes place on copper(II) oxide

4.Gas flushed in chips to prevent them from getting oxidized

5. process of oxidation of oils and fats in a food resulting into bad smell and bad taste

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Answer 1

Answer:

ferrous sulphate

displacement

copper sulphate

carbon

galvanization

Answer 2

Answer:

Explanation:

1. Reaction of Iron Nails with Copper Sulphate Solution in Water. When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the color of copper sulphate solution changes from blue to light green.

2. H2​SO4

3.  When it is heated copper oxide is formed . Hence compound 'Y' is copper oxide. The reaction is as follows.It is a combination reaction. If hydrogen gas is passed over heated copper oxide (CuO), the black coating on the surface turns brown as the reverse reaction takes place and copper is obtained.

4. Potato chip bags are not full of air, but of nitrogen gas. This is done to prevent the chips from oxidizing, which is part of what makes them go stale. Oxygen is very reactive, and likes to combine with other molecules whenever it can, causing chemical changes to take place.

5. Rancidification is the process of complete or incomplete oxidation or hydrolysis of fats and oils when exposed to air, light, or moisture or by bacterial action, resulting in unpleasant taste and odor.