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प्रश्न
Define a thermal dissociation reaction with a suitable example.
उत्तर
“A decomposition reaction — in which a substance dissociates — into two or more simpler substances on the application of heat.”
\[\ce{NH4Cl⇌[heat][cool]NH3 + HCl}\]
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संबंधित प्रश्न
Explain, giving one example of the following chemical change:
Thermal dissociation
Decomposition reactions can occur by electricity
Give balanced reactions.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A coloured substance which decomposes violently leaving a coloured residue and evolving two neutral gases one of which is unreactive or inert in nature.
The reaction can be classified as:
State which of the following type, take place in the reaction is given below.
\[\ce{AgNO3 + HCl->AgCl + HNO3}\]
Define the following type of chemical change or reaction with a suitable example.
Direct combination reaction or synthesis
Define the following type of chemical change or reaction with a suitable example.
Double decomposition reaction
Name a metallic oxide which on thermal decomposition is reduced to metal.
State how displacement reaction represented.
Give a reason why zinc displaces hydrogen from dilute sulphuric acid but copper does not.
Give a balanced equation for the following type of reaction:
A synthesis reaction between a metal and a non-metal resulting in the formation of an insoluble salt of iron.
