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Question

The metal other than aluminium present in both magnalium and duralumin is :

A
iron
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B
manganese
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C
magnesium
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D
copper
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Solution

The correct option is D magnesium
Magnalium is an aluminium alloy with 1.5 to 2% magnesium and small amounts of copper, nickel and tin. Duralumin, an alloy of aluminum that is 4 percent copper and contains small amounts of magnesium, manganese, iron, and silicon.

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