Mischmetall consists of a lanthanoid metal (95%) and iron (∼ 5%) and traces of \(S\), \(C\), \(Ca\) and \(Al\). Mischmetall used for producing bullets contains:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → \(Mg\) based alloy
Mischmetall is an alloy of a lanthanoid metal (~95%) with iron (~5%) and traces of S, C, Ca and Al. A good deal of mischmetall is used in a magnesium-based alloy to produce bullets, shells and lighter flints.
NCERT (2026-27 edition):
General Characteristics – “… A well known alloy is mischmetall which consists of a lanthanoid metal (~ 95%) and iron (~ 5%) and traces of S, C, Ca and Al. A good deal of mischmetall is used in Mg-based alloy to produce bullets, shell and lighter flint.”