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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.
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Why does aluminium not react with water under ordinary conditions?
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Name two metals which cannot displace hydrogen from dilute acids.
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Why is white phosphorus kept immersed under water?
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Can we keep sodium immersed under water? Why?
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Describe the reaction of potassium with water. Write the equation of the reaction involved.
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Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
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Give one example, with equation, of the displacement of hydrogen by a metal from an acid.
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Name two metals (other than zinc and iron) which can displace hydrogen from dilute hydrochloric acid?
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What is the action of water on sodium ? Write equation of the chemical reaction involved.
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What is the action of water on magnesium ? Write equation of the chemical reaction involved.
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What is the action of water on aluminium ? Write equation of the chemical reaction involved.
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You are given samples of three metals − sodium, magnesium and copper. Suggest any two activities to arrange them in order of their decreasing reactivities.
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Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
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What special name is given to substances like aluminium oxide.
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Name another metal oxide which behaves like aluminium oxide.
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What happens when calcium reacts with water? Write the chemical equation of the reaction of calcium with water.
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Write the chemical equation of the reaction which takes place when iron reacts with dilute sulphuric acid. What happens when the gas produced is ignited with a burning matchstick?
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What happens when a metal reacts with dilute hydrochloric acid? Explain with the help of an example.
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Write the equation for the reaction of Magnesium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
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