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प्रश्न
Differentiate between the following:
Synthesis reaction and a substitution reaction.
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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.”
\[\ce{A + BC->B + AC}\]
\[\ce{Mg + CuSO4->Cu + MgSO4}\]
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संबंधित प्रश्न
The reaction of iron nail with copper sulphate solution is ______ reaction.
Explain the types of reaction with reference to oxygen and hydrogen. Illustratre with examples.
State the type of reactions for the following represent and balance the ones that are not balanced.
KNO3 + H2SO4 → HNO3 + KHSO4
Give an example of double displacement reaction, where a gas is evolved.
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.
\[\ce{Cl2 + 2Kl->2KCl + l2}\]
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
Convert hydrogen to hydrogen chloride by a direct combination reaction.
Give a balanced equation for thermal decomposition of calcium hydroxide
Define a displacement reaction with a suitable example.
