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JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS
1
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Choose the appropriate option about the misch metal.
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Correct option: C
It finds application in making aeroplane body
Option A is correct. Misch metal is an alloy of lanthanoid metal (~95%) and iron (~5%) with traces of S, C, Ca, and Al. It's used in Mg-based alloys for various applications, including making lighter flints, but not aeroplane bodies.
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The number of element from the following that do not belong to lanthanoids is :
Eu, Cm, Er, Tb, Yb and Lu Statement-I: , have same colour (yellow).
Statement-II: Both ions are having same number of unpaired electrons. The most common oxidation state of Lanthanoid
elements is +3. Which of the following is likely to
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Eu, Cm, Er, Tb, Yb and Lu Statement-I: , have same colour (yellow).
Statement-II: Both ions are having same number of unpaired electrons. The most common oxidation state of Lanthanoid
elements is +3. Which of the following is likely to
also form other oxidation state? A mixture of and is called
