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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 8

Complete and Balance the Following Chemical Equations: Fe So_4 + Naoh → (Aq.) (Aq.) - Chemistry

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प्रश्न

Complete and balance the following chemical equations:

Fe `"SO"_4`  + NaOH  `→`

   (aq.)          (aq.)

एका वाक्यात उत्तर

उत्तर

\[\ce{\underset{\text{(aq.)}}{FeSO4} +\underset{\text{(aq.)}}{NaOH} -> Fe(OH)2 + Na2SO4}\]

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पाठ 6: Chemical Reactions - Exercise 1 [पृष्ठ ७३]

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सेलिना Concise Chemistry [English] Class 8 ICSE
पाठ 6 Chemical Reactions
Exercise 1 | Q 6.6 | पृष्ठ ७३

संबंधित प्रश्‍न

How do the following help in bringing about a chemical change?

light.


Complete and balance the following chemical equations

NaCI + `AgNO_3`  `→`


Define catalyst.


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In a double decomposition precipitation reaction both the reactants must be ............ soluble.


FILL IN THE BLANK

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


FILL IN THE BLANK

Positively charged ions are called ........


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Distillation is a method of obtaining pure ............. from a solution.


Is kerosene an electrolyte or a non-electrolyte ?


Balance the following equation :

Fe + H2O → Fe3O4 + H2


A solution of a substance ‘X’ is used for white washing Name the substance ‘X’ and write its formula.


Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.

Water


Define Photochemical reaction
Give an example

 


Write the chemical reaction where the following changes are observed.

Colour change is noticed


Give an example of the following chemical changes.

A reaction involving

     (i) Change of state

     (ii) formation of precipitate


Define:
 Photochemical reaction
Give one example 


Give a chemical test to distinguish between the following gases. 

CO2 and SO2


Distinguish by dilute sulphuric acid.

Sodium Sulphite and sodium carbonate?


Give a word equation for the following reaction.

A compound which on heating shows – colour change from brown to yellow.


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

Zinc carbonate to zinc oxide


Complete the table given below.

Heat on ammonium dichromate Name of neutral gas evolved  

Explain the term chemical reaction with special reference to reactants and products.


Complete the statement by filling in the blank with the correct word:

The reddish-brown precipitate obtained during a double decomposition precipitation reaction between an iron salt and alkali is __________.


Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.

Copper nitrate.


When lithium metal is placed in hydrochloric acid, _______ gas is evolved.


On heating calcium carbonate gets converted into calcium oxide and carbon dioxide.

(a) Is this a physical or a chemical change?

(b) Can you prepare one acidic and one basic solution by using the products formed in the above process? If so, write the chemical equation involved.


Which of the following is/are true when milk changes into curd?

  1. Its state is changed from liquid to semi-solid.
  2. It changes colour.
  3. It changes the taste.
  4. The change cannot be reversed.

Choose the correct option from below:


Beating an egg to make a cake is a ______.


When magnesium is burnt in the air, a new substance is formed which is ______.


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