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Question:

Explain these statements about Aluminium.?

a) Although Aluminium is a reactive metal, it is used to make door frames and window frames.b) Although Aluminium conducts heat, it is used to make blankets, which are good thermal insulators.

Answer:

a) Aluminium forms oxide on its surface thus protecting it. This protective oxides help the inner part being corroded / reacted . Its highly maliable and dectile property is also good. Thats why !!!!!!!! b) For making thermal insulators, i think, thin layers (maliability) of aluminium is using, where in between the layers the trapped air which is a poor thermal conductors, which gives the property.
a] AL is used to make frames because it is light, not costly and strong.
aluminum is cheap . easy to work with and good looking , because of this it is used to make door frames etc.
A) Because AL is light and durable, plus inexpensive and is a good insolator, it is used to make door frames and window frames. B) This one is self explanatory in the sentence.
a) true b) false

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