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प्रश्न
A metal oxide that is reduced by hydrogen is
पर्याय
Al2O3
CuO
CaO
Na2O
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उत्तर
CuO
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संबंधित प्रश्न
Explain the following in term Oxidation of gain or loss of oxygen with two example.
Identify the component oxidised in the following reaction:
\[\ce{H2S + Cl2 -> S + 2HCl}\]
Give one example of an oxidation-reduction reaction which is also a displacement reaction.
For the reaction PbO + H2→ Pb + H2O, which of the following statements is wrong?
Name:
a gas that is oxidizing as well as a reducing agent.
Complete and balance the following equation:
Fe + H2O →___________+____________
Write chemical formula for rust.
Which of the following statements about the given reaction are correct?
\[\ce{3Fe_{(s)} + 4H2O_{(g)} -> Fe3O4_{(s)} + 4H2_{(g)}}\]
(i) Iron metal is getting oxidised.
(ii) Water is getting reduced.
(iii) Water is acting as the reducing agent.
(iv) Water is acting as oxidising agent.
Identify the oxidising agent (oxidant) in the following reactions
`3"Fe" + 4"H"_2"O" -> "Fe"_3"O"_4 + 4"H"_2`
Grapes hanging on the plant do not ferment but after being plucked from the plant can be fermented. Under what conditions do these grapes ferment? Is it a chemical or a physical change?
