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प्रश्न
Identify from the reaction the reactants that undergo oxidation and reduction.
2Mg + O2 → 2MgO
\[\ce{2Mg + O2 ->[\Delta] 2MgO}\]
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उत्तर १
In a reaction, magnesium is changing to magnesium oxide. That means, oxygen is being added to magnesium. Addition of oxygen to a substance is called oxidation, so magnesium undergoes oxidation.
उत्तर २
Mg undergoes oxidation and O2 undergoes reduction.
संबंधित प्रश्न
Corrosion can be prevented by using ……………. solution.
What is an oxidising agent?
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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.
Explain the following in term Oxidation of gain or loss of oxygen with two example.
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Write the chemical formula of rust.
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(a) which substance is reduced?
(b) Which substance is oxidised?
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Explain oxidation in terms of gain or loss of oxygen with one example.
Explain reduction in terms of gain or loss of oxygen with one example.
Define reduction in terms of gain or loss of hydrogen with one example.
Hydrogen burns with a ______ flame and ______ sound is heard.
Fill in the blank
Oxidation is the removal of ......................and addition of ....................
Indicate which of the following statement is true and which is false:
The removal of hydrogen from a substance is called reduction.
TRUE \ FALSE
Hydrogen is a good oxidizing agent.
The electron releasing tendency of zinc is ______ than that of copper.
Identify from the following reaction the reactants that undergo oxidation and reduction.
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reducing power
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Why this reaction is considered a reversible reaction?
State, giving reason, whether the substances printed in bold letters have been oxidized or reduced.
Mg + 2HCl → MgCl2 + H2
State whether the following conversion is oxidation or reduction:
PbO2 + SO2→ PbSO4
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(CuO, H2, Cu, H2O)
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an oxidizing agent that does not contain oxygen.
Name:
a liquid that is an oxidizing agent as well as a reducing agent.
Name:
a gas that is oxidizing as well as a reducing agent.
Name:
a solid that is an oxidizing agent.
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H2 + S → ___________
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Fe + H2O →___________+____________
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Select the correct answer from the symbol in the bracket.
The element, which like hydrogen is a strong reducing agent.
Identify the following reactions as oxidation or reduction
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\[\ce{3Fe_{(s)} + 4H2O_{(g)} -> Fe3O4_{(s)} + 4H2_{(g)}}\]
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(ii) Water is getting reduced.
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\[\ce{MnO2 + 4HCl -> + 2H2O + Cl2}\]
Identify the substance oxidized in the above equation.
Identify the oxidising agent (oxidant) in the following reactions.
`"CuO" + "H"_2 -> "Cu" + "H"_2"O"`
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Mention some oxidation reactions that occur in daily life.
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Identify the following reactions as oxidation/reduction/redox reaction
2Mg +O2 → 2MgO
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Find the oxidation number of the element in the following compound.
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\[\ce{CH3 - CH2 - OH ->[{[O]}][K2Cr2O7/H2SO4] CH3 - COOH}\]
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- What is the role of the chemical written on the arrow?
- Give one example of one such type of chemical as in answer (b).
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MnO2 + 4HCl → MnCl2 + 2H2O + Cl2
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