Select the correct answer from A, B, C, D and E for each of the metals given below :
A metal present in duralumin but not in magnalium.
A
A : Aluminium
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B
B : Copper
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C
C : Lead
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D
D : Potassium
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E
E : Iron
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F
F : manganese
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Solution
The correct option is F F : manganese F. Manganese Duralumin is an ultrastrong alloy of aluminium,copper,magnesium and manganese while magnalium is an alloy of aluminium with magnesium,copper,nickle and tin. So duralumin has manganese which is not present in magnalium.