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Answer 1

Answer:

Your 1 Answer is : going to be come bronzes colour

Your 2 Answer is : sorry yaar i don't much sure and i have a rule which not getting sure then i didn't give wrong answer to Questioner

Your 3 Answer is : 1...Nitrogen 4 division and Oxgyen gas and Nitrogen 2 division

2...Hydrogen and copper sulphate and water

Explanation:

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Answer 2

Answer:

1.When a few pieces of iron are dropped into a blue coloured copper sulphate solution,the blue colour of the solution fades and eventually turns into green.

2.A double displacement reaction is a type of reaction in which two reactants react and the positively charged ions of one and the negatively charged ion of the other reactant are interchanged. ... An example of this type of reaction is the reaction of copper sulphate and iron.

3.

(i). Sodium (Na) is oxidised as it gains oxygen and oxygen gets reduced.

(ii). Copper oxide (CuO) is reduced to copper (Cu) while hydrogen (H2) gets oxidised to water (H2O).

Explanation:

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