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प्रश्न
Differentiate between direct combination reaction and a decomposition reaction.
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उत्तर
Direct combination: “Is a reaction in which two elements or compound combine to give one new compound.”
\[\ce{C + O2->CO2}\]
Decomposition reaction: “A chemical compound (breaks up) decomposes into two or more simpler substances.”
\[\ce{Copper carbonate->Copper oxide + Carbon dioxide}\]
\[\ce{CuCO3->CuO + CO2}\]
APPEARS IN
संबंधित प्रश्न
The white solid compound A decomposes quite rapidly on heating in the presence of a black substance X to form a solid compound B and a gas C. When an aqueous solution of compound B is reacted with silver nitrate solution, then a white precipitate of silver chloride is obtained along with potassium nitrate solution. Gas C does not burn itself but helps burn other things.
- What is compound A?
- What is compound B?
- What is gas C?
- What do you think is the black substance X? What is its function?
- What is the general name of substances like X?
What type of reaction is represented by the following equation?
\[\ce{CaCO3 -> CaO + CO2}\]
What is meant by a decomposition reaction?
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Thermal decomposition of a substance is brought about with the help of
- reactants
- water
- wind
- heat
What are thermal decomposition reactions ? Explain with an example.
A student wants to study a decomposition reaction by taking ferrous sulphate crystals. Write two precautions he must observe while performing the experiment.
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 _________.
Differentiate between the following:
Electrolytic decomposition and photochemical decomposition.
Chemical volcano is an example of ______ type of reaction.
