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Question

Duralumin is an alloy of:


A
Al + Mg
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B
Al +Cu+ Mg + Mn
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C
Al + Zn+ Mg + Ni
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D
Al +Cu
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Solution

The correct option is B Al +Cu+ Mg + Mn
Duralumin is an alloy, a trade name given to the earliest types of the age hardenable aluminum alloys. 

It is an alloy made up of 90% aluminum,4% copper, 1% magnesium and 0.5% to 1% manganese. It is a very hard alloy.

Option B is correct.

Chemistry

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