Question

'Misch metal' is widely used in the manufacture of which of the following?

• A. Material of car break
• B. Smoke detector
• C. Cigarette lighter
• D. Emergency light

Answer 1

The correct option is C Cigarette lighter

Mischmetal is an alloy of rare-earth elements. It is also called cerium mischmetal, or rare-earth mischmetal. A typical composition includes approximately 50% cerium and 25% lanthanum, with small amounts of neodymium and praseodymium. Its most common use is in the ferrocerium "flint" ignition device of many lighters and torches, although an alloy of only rare-earth elements would be too soft to give good sparks.