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An extra quantity of more than ___ % of manganese will heighten brittleness of the metal.

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An extra quantity of more than ___ % of manganese will heighten brittleness of the metal.

(a) 5

(b) 1

(c) 44

(d) 13

I got this question in semester exam.

This key question is from Steel and its Alloys-1 in portion Steel and its Alloys of Aerospace Materials & Processes

1 Answer

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Best answer
Correct choice is (b) 1

For explanation I would say: An extra quantity that is not required of more than one percent can make the material extra brittle. Manganese is advantageous when added in the right amount. It is also none magnetic in nature.

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