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What is an Oxidation Reaction? Identify in the Following Reaction (I) the Substance Oxidised, and (Ii) the Substance Reduced: Zno + C → Zn + Co - Science

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प्रश्न

What is an oxidation reaction? Identify in the following reaction (i) the substance oxidised, and (ii) the substance reduced:

ZnO + C → Zn + CO

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उत्तर

Oxidation reaction is a reaction that involves addition of oxygen to a substance and removal of hydrogen from a substance.

(i) C is oxidised to CO because oxygen is added.

(ii) ZnO is reduced to Zn because oxygen is removed.

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पाठ 1: Chemical Reactions and Equations - Exercise 2 [पृष्ठ ४६]

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लखमीर सिंह Chemistry (Science) [English] Class 10
पाठ 1 Chemical Reactions and Equations
Exercise 2 | Q 25 | पृष्ठ ४६

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संबंधित प्रश्‍न

Which of the statements about the reaction below are incorrect?

\[\ce{2PbO(s) + C(s) → 2Pb(s) + CO2(g)}\]

  1. Lead is getting reduced.
  2. Carbon dioxide is getting oxidised.
  3. Carbon is getting oxidised.
  4. Lead oxide is getting reduced.

What is meant by rust?


Give an example of an oxidation reaction.


Explain reduction in terms of gain or loss of oxygen with one example.


Name the following:

The process in which oxygen is added or hydrogen is removed.


Electrolysis is a redox process. Explain.


Compare hydrogen with alkali metals on the basis of:

Oxide formation 


Give the general group study of hydrogen with reference to

reducing power 


State, giving reason, whether the substances printed in bold letters have been oxidized or reduced.

PbO + CO → Pb + CO2


State the condition and give balanced equation for the conversion of coke to water gas.


Explain the term reduction in term of addition and removal of oxygen/hydrogen with a suitable example.


Give two test for an oxidising agent.


Find the oxidation number of the elements in the following compounds. 

  1. C in CO2
  2. Mn in MnSO4
  3. N in HNO3

When Ag is exposed to air it gets a black coating of ____________.


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.

  1.  Why do silver articles turn black when kept in the open for a few days? Name the phenomenon involved.
  2. Name the black substance formed and give its chemical formula.

Mention some oxidation reactions that occur in daily life.


It is recommended to use air tight containers for storing oil for a long time.


Metals are good ______.


The metallic oxide which can be reduced by using common reducing agents is ______.


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