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The d & f Block Elements — Chemistry STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceChemistryThe d & f Block Elements1 Mark
MCQ
Which of the following becomes paramagnetic on heating?
  • A
    MnO
  • B
    Fe3​O4​
  • C
    ZnFe2​O4​
  • D
    B and C both
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