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प्रश्न
Name:
a substance that will reduce aqueous Iron(III)ions to iron(II)ions.
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उत्तर
zinc
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संबंधित प्रश्न
Define an oxidation reaction.
TRUE \ FALSE
Hydrogen is a good oxidizing agent.
Explain the following in term Reduction of gain or loss of oxygen with two example.
Identify from the reaction the reactants that undergo oxidation and reduction.
2Mg + O2 → 2MgO
For the reaction PbO + H2→ Pb + H2O, which of the following statements is wrong?
Explain the term oxidation in term of addition and removal of oxygen/hydrogen with a suitable example.
State what is oxidising agent. Give an example of oxidising agent in the gaseous, liquid, and solid form.
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.
A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining.
- Why do silver articles turn black when kept in the open for a few days? Name the phenomenon involved.
- Name the black substance formed and give its chemical formula.
State whether the given chemical reaction is a redox reaction or not. Justify your answer.
\[\ce{MnO_2 + 4HCl->MnCl_2 +2H_2O + Cl_2}\]
