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JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS
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Cadmipone is a mixture of:
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Correct option: A
CdS and
Option A (CdS and ) is correct because Cadmipone is a mixture of cadmium sulfide (CdS) and barium sulfate ().
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Mercury is transported in metal containers made of:
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
also form other oxidation state? A mixture of and is called Smallest ionic radii among the following is of
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 Smallest ionic radii among the following is of