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AIIMS 2010
Exam
AIIMS
Year
2010
Subject
Chemistry
Chapter
d and f Block Elements

AIIMS 2010 · Chemistry · d and f Block Elements

What are constituents of 'Mischmetal'?

What are constituents of 'Mischmetal'?

Options

  1. ALa,Fe\mathrm{La}, \mathrm{Fe}
  2. BLa,Ce\mathrm{La}, \mathrm{Ce}
  3. CFe,Ce\mathrm{Fe}, \mathrm{Ce}
  4. DCe,Cu\mathrm{Ce}, \mathrm{Cu}

Correct answer

B. La,Ce\mathrm{La}, \mathrm{Ce}

Step-by-step solution

The constituents of Mischmetal is approximately 50%50 \% cerium and 25%25 \% lanthanum with small amounts of neodymium and praseodymium.
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