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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Write Your Observation for the Following Chemical Reaction and Name the Product Formed : When Manganese Dioxide is Added to Potassium Chlorate and Heated. - Chemistry

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प्रश्न

Write your observation for the following chemical reaction and name the product formed :

When manganese dioxide is added to potassium chlorate and heated.

एक पंक्ति में उत्तर
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उत्तर

Manganese dioxide acts as a catalyst for the decomposition of potassium chlorate into potassium chloride and oxygen at a lower temperature.

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अध्याय 5: Language of Chemistry - Exercise

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सेलिना Concise Chemistry [English] Class 7 ICSE
अध्याय 5 Language of Chemistry
Exercise | Q 7.2

संबंधित प्रश्न

Give one example of a chemical reaction.


Balance the given chemical equation:

C + CO2 → CO


With the help of an appropriate example, justify that some of the chemical reactions are determined by Change in temperature.

Give chemical equation for the reaction involved in the above case.


A metal X forms a salt XSO4. The salt XSO4 forms a clear solution in water which reacts with sodium hydroxide solution to form a blue precipitate Y. Metal X is used in making electric wire and alloys like brass.
(a) What do you think metal X could be?
(b) Write the name, formula and colour of salt XSO4.
(c) What is the blue precipitate Y?
(d) Write a chemical equation of the reaction which takes place when salt XSO4 reacts with sodium hydroxide solution. Give the state symbols of all the reactants and products which occur in the above equation.


Express the following facts in the form of a balanced chemical equation:
"When a strip of copper metal is placed in a solution of silver nitrate, metallic silver is precipitated and a solution containing copper nitrate is formed".


Write word equation for the following skeletal equation:

\[\ce{FeCl2 + Cl2 -> FeCl3}\]


Write the answer to the following.

Explain the similarity and difference in two events, namely adding NaOH to water and adding CaO to water.


Balance the following equation:

Ca + N2 → Ca3N2


Write the balanced chemical equation of the following reaction.
potassium bicarbonate + sulphuric acid → potassium sulphate + carbon dioxide + water


Write a balanced equation for the following word equation:

Aluminium + Oxygen → Aluminium oxide 


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