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प्रश्न
Give an example of a photochemical decomposition reaction.
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उत्तर
Photochemical decomposition reaction: Decomposition in presence of light.
\[\ce{\underset{\text{hydrogen per oxide}}{2H2O2}->[sun light]2H2O + O2}\]
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संबंधित प्रश्न
Explain, giving one example for each of the following chemical changes:
Displacement
State the type of reactions for the following represent and balance the ones that are not balanced.
2HgO → 2Hg + O2
What is a decomposition reaction?
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 |
State which of the substance given below evolve oxygen gas on thermal decomposition.
Washing soda
State which of the substance given below evolve oxygen gas on thermal decomposition.
Ammonium dichromate
The reaction can be classified as:
State which of the following type, take place in the reaction is given below.
\[\ce{Cl2 + 2Kl->2KCl + l2}\]
The reaction can be classified as:
State which of the following type, take place in the reaction is given below.
\[\ce{SO2 + 2H2O + Cl2->2HCl + H2SO4}\]
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
State the double decomposition – neutralization reaction with a suitable representation.
