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प्रश्न
Explain the term oxidation in term of addition and removal of oxygen/hydrogen with a suitable example.
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उत्तर
Addition of oxygen or removal of hydrogen is called oxidation.
\[\ce{Carbon + Oxygen->Carbon dioxide}\]
\[\ce{C + O2->CO2}\]
Here carbon is oxidised to \[\ce{CO2}\]
\[\ce{H2S + Cl2->2HCl + S}\]
Here `"H"_2"S"` is oxidised to sulphur as removal of `"H"_2` takes place.
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संबंधित प्रश्न
What is an oxidising agent?
Which of the statements about the reaction below are incorrect?
\[\ce{2PbO(s) + C(s) → 2Pb(s) + CO2(g)}\]
- Lead is getting reduced.
- Carbon dioxide is getting oxidised.
- Carbon is getting oxidised.
- Lead oxide is getting reduced.
Identify from the reaction the reactants that undergo oxidation and reduction.
2Mg + O2 → 2MgO
Explain the following in term of gain or loss of oxygen with two examples.
Oxidation
Complete and balance the following equation:
H2 + S → ___________
Explain the term reduction in term of addition and removal of oxygen/hydrogen with a suitable example.
Identify the oxidising agent (oxidant) in the following reactions
`"Pb"_3"O"_4 + 8"HCl" -> 3"PbCl"_2 + "Cl"_2 + 4"H"_2"O"`
Which among the following are physical or chemical change?
Heating of an iron rod to red hot
During the reaction of some metals with dilute hydrochloric acid, following observations are made.
Some bubbles of a gas are seen when lead (Pb) is reacted with the acid.
Explain this observation giving suitable reason.
When hydrogen gas is passed over black copper oxide, a reddish-coloured layer of copper is formed.
Answer the questions that follow based on this reaction.
- Write the equation.
- What type of reaction is it?
- Complete the blanks:
In this reaction, an oxygen atom goes away from CuO (copper oxide), which means that ______ of copper oxide takes place, whereas a hydrogen molecule takes up an oxygen atom and water (H2O) is formed, meaning ______ of hydrogen takes place.
