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प्रश्न
Write the chemical equation for the following reaction:
Manganese dioxide is heated with aluminum powder.
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उत्तर
\[\ce{\underset{\text{Manganse dioxide}}{3MnO2}+\underset{\text{Aluminium}}{4Al}->\underset{\text{Mangenese metal}}{2Al2O3}+\underset{\text{Aluminium oxide}}{Heat}}\]
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संबंधित प्रश्न
Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium
Write the electron-dot structures for sodium, oxygen and magnesium.
A copper plate was dipped in AgNO3 solution. After certain time, silver from the solution was deposited on the copper plate. State the reason why it happened. Give the chemical equation of the reaction involved.
What is the action of water on sodium ? Write equation of the chemical reaction involved.
What special name is given to substances like aluminium oxide.
Name another metal oxide which behaves like aluminium oxide.
Name one metal more reactive and another less reactive than hydrogen.
The elements whose oxides can turn litmus solution red are:
(a) lithium and sodium
(b) copper and potassium
(c) carbon and hydrogen
(d) phosphorus and sulphur
An element X forms two oxides XO and XO2. The oxide XO has no action on litmus solution but oxide XO2 turns litmus solution red.
(a) What is the nature of oxide XO?
(b) What is the nature of oxide XO2?
(c) Would you call element X a metal or a non-metal? Give reason for your choice.
(d) Can you give an example of element like X?
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
- Good thermal conductivity
- Good electrical conductivity
- Ductility
- High melting point
