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प्रश्न
For the reaction PbO + H2→ Pb + H2O, which of the following statements is wrong?
विकल्प
H2 is the reducing agent.
PbO is the oxidizing agent.
PbO is oxidized to Pb.
H2 is oxidized to H2O.
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उत्तर
PbO is oxidized to Pb.
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संबंधित प्रश्न
Fill in the blank
Oxidation is the removal of ......................and addition of ....................
MULTIPLE CHOICE QUESTIONS
The process of adding oxygen to a substance is called
- oxidation.
- reduction.
- displacement.
- hydrogenation.
Identify the substances that are oxidised and the substances that are reduced in the following reaction.
\[\ce{CuO_{(s)} + H2_{(g)} -> Cu_{(s)} + H2O_{(l)}}\]
Give scientific reason.
It is reccommended to use air tight container for storing oil for long time.
State what is reducing agent. Give an example of oxidising agent in the gaseous, liquid, and solid form.
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?
Identify the following reactions as oxidation/reduction/redox reaction
CuO+H2 → Cu+H2O
What are reducing agents? Give examples.
Identify the type of chemical reaction given below:
\[\ce{2Mg + O2 -> 2MgO}\]
A reddish brown metal used in electrical wires when powdered and heated strongly turns black. When hydrogen gas is passed over this black substance, it regains its original colour. Based on this information answer the following questions:
- Name the metal and the black substance formed.
- Write balanced chemical equations for the two reactions involved in the above information
