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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 8

Give a Balanced Equation for the Following Type of Reaction: a Thermal Decomposition Reaction in Which a Metallic Nitrate Decomposes to Give – a Basic Oxide.

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प्रश्न

Give a balanced equation for the following type of reaction:

A thermal decomposition reaction in which a metallic nitrate decomposes to give – a basic oxide.

एक पंक्ति में उत्तर
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उत्तर

\[\ce{2Ca[NO3]2->[\Delta]\underset{\text{Basic oxide}}{2CaO} + 4NO2 + O2}\]

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अध्याय 6: Chemical Reactions - Objective type questions

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विराफ जे दलाल Simplified Middle School Chemistry [English] Class 8 ICSE
अध्याय 6 Chemical Reactions
Objective type questions | Q 3.3

संबंधित प्रश्न

Write one equation for decomposition reactions where energy is supplied in the form of heat.


Taking into consideration the relationship in the first pair, complete the second pair

2H2 + O2 → 2H2O :Combination Reaction :: 2HgO → 2Hg + O2:_________


Name the product formed on strongly heating ferrous sulphate crystals. What type of chemical reaction occurs in this change?


Two metals X and Y form the salts XSO4 and Y2SO4, respectively. The solution of salt XSO4 is blue in colour whereas that of Y2SO4 is colourless. When barium chloride solution is added to XSO4 solution, then a white precipitate Z is formed along with a salt which turns the solution green. And when barium chloride solution is added to Y2SO4 solution, then the same white precipitate Z is formed along with colourless common salt solution.

  1. What could the metals X and Y be?
  2. Write the name and formula of salt XSO4.
  3. Write the name and formula of salt Y2SO4.
  4. What is the name and formula of white precipitate Z?
  5. Write the name and formula of the salt which turns the solution green in the first case.

Classify the following reaction into – 

  1. Direct combination 
  2. Decomposition
  3. Displacement
  4. Double decomposition

The reaction is – Zinc hydroxide on heating gives zinc oxide and water.


Give a balanced equation for –

An electrolytic decomposition reaction involving a neutral liquid


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

Decomposition of silver salts in the presence of sunlight is an example of _________.


Assertion: Decomposition of vegetable matter into compost is an endothermic reaction.

Reason: Decomposition reaction involves breakdown of a single reactant into simpler products.


What is observed when silver chloride is exposed to sunlight? Give the type of reaction involved.


A solution of a substance ‘X’ is used for whitewashing.

  1. Name the substance ‘X’ and write its formula.
  2. Write the reaction of the substance ‘X’ named in the above formula with water.

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