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Q.

The percentage of lanthanides and iron, respectively, in Misch metal are
 

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a

90, 10 

b

50,50 

c

 75, 25 

d

 95, 5

answer is D.

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Detailed Solution

 Misch metal consists of a typical composition has 95% lanthanides and 5% iron and contains around 55% cerium, 25% lanthanum, 15%–18% neodymium, and traces of other rare earth elements.

Hence, the correct option is option is (D)

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