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p -Block elements - ll — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistryp -Block elements - ll1 Mark
MCQ
Monazite is source of
  • ✓
    $He$
  • B
    $Kr$
  • C
    $Ar$
  • D
    $Ne$
✓

Answer

Correct option: A.
$He$
a
It’s Obvious.

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