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प्रश्न
Differentiate between the following:
Synthesis reaction and a substitution reaction.
उत्तर
Synthesis and substitution reaction:
- Synthesis reaction: “Is a chemical reaction in which two or more elements or an element and a compound or two compounds combine to form a new compound.”
\[\ce{2Al + 3Cl2->2AlCl3}\] - Substitution reaction: “Is a chemical reaction takes place when an element or radical (more reactive) replaces another element in a compound.”
\[\ce{A + BC->B + AC}\]
\[\ce{Mg + CuSO4->Cu + MgSO4}\]
APPEARS IN
संबंधित प्रश्न
State the type of reactions for the following represent and balance the ones that are not balanced.
KNO3 + H2SO4 → HNO3 + KHSO4
Decomposition reactions can occur by heat.
Give two balanced reactions for each.
Select the correct salt from list II which on thermal decomposition exhibits the change in colour from list I.
| List I | List II |
| 1. Light green to black | A: Copper carbonate |
| 2. White to yellow [heated state] | B: Hydrated Copper sulphate |
| 3. Blue to black | C: Copper nitrate |
| 4. Orange to green | D: Ammonium dichromate |
| 5. Blue to white | E: Zinc nitrate |
The reaction can be classified as:
State which of the following type, take place in the reaction is given below.
\[\ce{4HNO3->4NO2 + 2H2O + O2}\]
Define the following type of chemical change or reaction with a suitable example.
Displacement reaction or substitution reaction
Give a balanced equation for a direct combination reaction involving:
Two elements – one of which is a neutral gas and the other a yellow non-metal
Explain the term double decomposition precipitation reaction.
Define the term – double decomposition – neutralization reaction.
Give a balanced equation for the following type of reaction:
A soluble salt of lead formed from an insoluble base by double decomposition – neutralization.
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.
