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Define Oxidation in Terms of Gain Or Loss of Hydrogen with One Example. - Science

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प्रश्न

Define oxidation in terms of gain or loss of hydrogen with one example.

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उत्तर

Oxidation is the loss of hydrogen.

Example:
MnO2+ 4HCl → MnCl2 + 2H2O + Cl2
Here, HCl oxidises to Cl2 by losing hydrogen.

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पाठ 1: Chemical Reactions and Equations - Exercise 2 [पृष्ठ ४७]

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लखमीर सिंह Chemistry (Science) [English] Class 10
पाठ 1 Chemical Reactions and Equations
Exercise 2 | Q 35.1 | पृष्ठ ४७

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संबंधित प्रश्‍न

Define ‘redox reaction’. Give one example.


In the reaction represented by the equation:

MnO2 + 4HCl → MnCl2 + 2H2O + Cl2

(i) name the substance oxidised.
(ii) name the oxidising agent.
(iii) name the substance reduced.
(iv) name the reducing agent.

 


Give scientific reason.

It is reccommended to use air tight container for storing oil for long time.


Why this reaction is considered a reversible reaction?


Is it essential that oxidation and reduction must occur side by side in a chemical reaction? Explain


State whether the following conversion is oxidation or reduction:

2Cl- - e-→ Cl2 


In the following reaction: A+ + B → A + B+. Write half-reactions for this reaction and name:

  1. oxidizing agent
  2. substance oxidized
  3. reducing agent 

Write the equation in the ionic form

CuSO4(aq)  + Fe(s)→ FeSO4(aq) + Cu(s)

 

 


Give two test for an oxidising agent.


The process of reduction involves ____________.


In the reaction of iron with copper sulphate solution:

CuSO4 + Fe → Cu + FeSO4

Which option in the given table correctly represents the substance oxidized and the reducing agent?

OPTION Substance Oxidized Reducing Agent
A Fe Fe
B Fe FeSO4
C Cu Fe
D CuSO4 Fe

Which among the following are physical or chemical change?

Curding of milk


You are provided with two containers made up of copper and aluminium. You are also provided with solutions of dilute HCl, dilute HNO3, ZnCl2 and water. In which of the above containers, can these solutions be kept?


Mention some oxidation reactions that occur in daily life.


Identify the following reactions as oxidation/reduction/redox reaction

2Mg +O2 → 2MgO


What are reducing agents? Give examples.


Define oxidation number.


Find the oxidation number of the element in the following compound.

Mg in MgO


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:

  1. Name the metal and the black substance formed.
  2. Write balanced chemical equations for the two reactions involved in the above information

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