Question

Pig iron from blast furnace contains ________ sulfur.

(a) 0.1%

(b) 0.5%

(c) 0.08%

(d) 0.8%

The question was posed to me in final exam.

The above asked question is from Manufacture of Tinplate in chapter Metal Packaging Materials of Food Packaging Technology

Answer 1

The correct answer is (c) 0.08%

Easy explanation: Pig iron from blast furnace contains 0.08% sulfur. The low concentration of sulfur increases longevity. But a higher concentration acts as an impurity.