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प्रश्न
State which of the substance given below evolve oxygen gas on thermal decomposition.
Zinc carbonate
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उत्तर
Zinc carbonate ZnCO3
On thermal decomposition, zinc carbonate is not evolved oxygen.
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संबंधित प्रश्न
State the type of reactions for the following represent and balance the ones that are not balanced.
CaCO3→ CaO+ CO2
State the type of reactions for the following represent and balance the ones that are not balanced.
AgNO3 + NaCl → AgCl + NaNO3
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
Complete the table given below.
| Heat on Copper Nitrate | Colour of acidic gas evolved |
Give a balanced equation for the following reaction of synthesis involving the formation of:
An acid – from sulphur dioxide gas
Give a balanced equation for thermal decomposition of calcium hydroxide
Give an example of a photochemical decomposition reaction.
Explain the term double decomposition precipitation reaction.
Differentiate between the following:
Decomposition reaction and a double decomposition reaction.
