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The specific gravity of magnesium is __________(a) 1.8(b) 7.9(c) 2.7(d) 13.8This question was posed to me in a national level competition.Origin of the question is Magnesium and its Alloys-1 topic in section Magnesium Alloys of Aerospace Materials & Processes

Answer»

The CORRECT choice is (a) 1.8

For EXPLANATION I would say: The specific GRAVITY of an object REFERS to the RATIO of the density of that object to the density of a reference object. The specific gravity of magnesium is 1.8. The specific gravity of aluminium is 2.7 and steel is 7.9.



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