Question

Pig iron from blast furnace contains ________ manganese.

(a) 5%

(b) 10%

(c) 1%

(d) 2.5%

This question was addressed to me in examination.

This interesting question is from Manufacture of Tinplate topic in portion Metal Packaging Materials of Food Packaging Technology

Answer 1

Right answer is (d) 2.5%

The best I can explain: Pig iron from blast furnace contains up to 2.5% manganese. Manganese greatly contributes to increasing the hardness of the pig iron.