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Question

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

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

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.

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