Give reasons : Aluminium is a highly reactive metal, yet it is used to make utensils for cooki

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3. Metals and Non-metals

medium

Give reasons : Aluminium is a highly reactive metal, yet it is used to make utensils for cooking.

Option A

Option B

Option C

Option D

Solution

Though aluminium is a highly reactive metal, it is resistant to corrosion. This is because aluminium reacts with oxygen present in air to form a thin layer of aluminium oxide. This oxide layer is very stable and prevents further reaction of aluminium with oxygen. Also, it is light in weight and a good conductor of heat. Hence, it is used to make cooking utensils.

Standard 10

Science

Write equations for the reactions of

$(i)$ iron with steam

$(ii)$ calcium and potassium with water

medium

$(i)$ Write the electron-dot structures for sodium. oxygen and magnesium.

$(ii)$ Show the formation of $Na _{2} O$ and $MgO$ by the transfer of electrons.

$(iii)$ What are the ions present in these compounds ?

medium

Name two metals which will displace hydrogen from dilute acids, and two metals which will not.

easy

What are amphoteric oxides? Give two examples of amphoteric oxides.

medium

What chemical process is used for obtaining a metal from its oxide ?

hard

Give reasons : Aluminium is a highly reactive metal, yet it is used to make utensils for cooking.

Solution

Similar Questions

Write equations for the reactions of $(i)$ iron with steam $(ii)$ calcium and potassium with water

$(i)$ Write the electron-dot structures for sodium. oxygen and magnesium. $(ii)$ Show the formation of $Na _{2} O$ and $MgO$ by the transfer of electrons. $(iii)$ What are the ions present in these compounds ?

Name two metals which will displace hydrogen from dilute acids, and two metals which will not.

What are amphoteric oxides? Give two examples of amphoteric oxides.

What chemical process is used for obtaining a metal from its oxide ?

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Write equations for the reactions of

$(i)$ iron with steam

$(ii)$ calcium and potassium with water

$(i)$ Write the electron-dot structures for sodium. oxygen and magnesium.

$(ii)$ Show the formation of $Na _{2} O$ and $MgO$ by the transfer of electrons.

$(iii)$ What are the ions present in these compounds ?