1. The Material of car break
  2. Smoke detectors
  3. Cigarette Lighters
  4. Emergency lights
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Option 3 : Cigarette Lighters

Misch metal is an alloy of rare-earth elements. Misch metal alloyed with iron is the flint (spark-producing agent) in cigarette lighters. It is also used as a deoxidizer in various alloys and to remove oxygen in vacuum tubes.
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