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State the Type of Reactions for the Following Represent and Balance the Ones that Are Not Balanced. Cl2 + 2kbr → 2kcl + Br2 - Chemistry

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प्रश्न

State the type of reactions for the following represent and balance the ones that are not balanced.

Cl2 + 2KBr → 2KCl + Br2 

एका वाक्यात उत्तर

उत्तर

Cl2 + 2KBr → 2KCl + Br2
Displacement reaction

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पाठ 2: Chemical Changes and Reactions - Exercise 2 (B) [पृष्ठ २९]

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सेलिना Concise Chemistry [English] Class 9 ICSE
पाठ 2 Chemical Changes and Reactions
Exercise 2 (B) | Q 10.01 | पृष्ठ २९

संबंधित प्रश्‍न

Give one example that illustrates the following characteristics of a chemical reaction:

Change in state


Write the missing reactants and products and balance the equations.

NaOH + ............... `→` NaCI + ...................


Give reason .

A person suffering from acidity is advised to take an antacid.


What are oxides ? 


MULTIPLE CHOICE QUESTIONS

Tick the most appropriate answer.

Compounds, which in their molten state allow an electric current to pass through them are called

  1. electrolytes
  2. non-electrolytes
  3. non-conductors
  4. none of these

FILL IN THE BLANK

........... electrolytes dissociate completely in aqueous state and allow large amount of electricity to flow through it.


Write true or false  : 

Hydrogen sulphide has rotten egg smell .


Give an example of a reaction where the following are involved:

Close contact


Multiple choice:

A reaction of a type: AB + CD → AD + CD, involves


State the original colour of the following substance and colour of residue obtained after heating.

Copper carbonate


Distinguish by dilute sulphuric acid.

Sodium sulphide and sodium sulphite?


What is a chemical reaction?


Give balanced equation for the following conversion affected by heat alone on the substance:

Copper carbonate to copper oxide


Complete the table given below.

Heat on ammonium dichromate Name of neutral gas evolved  

Complete the table given below.

Heat on sodium chloride Colour imparted to flame during flame test  

A thick coating of a paste of Plaster of Paris (POP) is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilised. Can the change in POP be reversed?


Write some materials prepared by chemical changes.


A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.

What changes do you expect?


Write a note on the following:

Curdling of milk


Both CO2 and H2 gases are ______.


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