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प्रश्न
Define the following type of chemical change or reaction with a suitable example.
Displacement reaction or substitution reaction
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उत्तर
Displacement Reaction Or Substitution Reaction :
“Those reactions in which one element takes place of another element in a compound, are known as substitution reactions”.
\[\ce{\underset{\text{silver white}}{Zn} + \underset{\text{blus solution}}{CuSO4}->\underset{\text{colourless solution}}{ZnSO4} + \underset{\text{red brown}}{Cu}}\]
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संबंधित प्रश्न
The reaction of iron nail with copper sulphate solution is ______ reaction.
Explain, giving one example for each of the following chemical changes:
Displacement
Match the following:
|
a. Zn(s) + H2SO4(aq) → ZnSO4(aq) + H2(g) |
i. Photochemical decomposition |
|
b. \[\ce{2AgCI(s) ->[Sunlight] 2Ag(s) + CI2(g)}\] |
ii. Thermal decomposition |
|
c. \[\ce{2KCI ->[Electricity] 2K + CI2}\] |
iii. Displacement reaction |
|
d. \[\ce{2HgO(s) ->[\Delta] 2Hg(s) + O(g)}\] |
iv. Electrolytic decomposition |
What is a decomposition reaction?
State which of the substance given below evolve oxygen gas on thermal decomposition.
Zinc nitrate
Define the following type of chemical change or reaction with a suitable example.
Decomposition reaction
State how displacement reaction represented.
Convert an insoluble base
Give a balanced equation for the following type of reaction:
A soluble salt of lead formed from an insoluble base by double decomposition – neutralization.
Differentiate between the following:
Thermal decomposition & thermal dissociation.
