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प्रश्न
Give an example of a reaction where the following are involved
Heat
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उत्तर
\[\ce{CuCO3_(_s_) ->[\Delta] CuO + CO2_(_g_)}\]
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संबंधित प्रश्न
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Compounds, which in their molten state allow an electric current to pass through them are called
- electrolytes
- non-electrolytes
- non-conductors
- none of these
TRUE \ FALSE
Weak electrolytes dissociate partially in their aqueous or fused state.
Fill in the blank.
Melting of ice is a _______ change.
Match the column in the following table.
| Reactants | Products | Type of chemical reaction |
| BaCl2(aq) + ZnSO4(aq) | H2CO3(aq) | Displacement |
| 2AgCl(s) | FeSO4(aq) + Cu(s) | Combination |
| CuSO4(aq) + Fe(s) | BaSO4↓ + ZnCl2(aq) | Decomposition |
| H2O(l) + CO2(g) | 2Ag(s) + Cl2(g) | Double displacement |
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Hydrogen chloride
Complete the table given below.
| Heat on sodium chloride | Colour imparted to flame during flame test |
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Lead nitrate.
Rusting of Iron: undesirable change:: Dead plants turn into manure: ______.
______ occurs in the absence of air and in the presence of micro-organisms such as yeast.
When milk is mixed with coffee decoction, the colour of milk and decoction changes due to ______.
