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

CBSE BoardEnglish MediumSTD 12 ScienceChemistryp -Block elements - ll1 Mark
MCQ
Most abundant element on earth is
  • ✓
    $O$
  • B
    $S$
  • C
    $Se$
  • D
    $Te$
✓

Answer

Correct option: A.
$O$
a
The amount of oxygen on earth's crust is $46\, \%$.

The amount of hydrogen on earth's crust is $0.15\, \%$.

The amount of nitrogen on the earth's crust is $0.002\, \%$.

The amount of silicon on earth's crust is $30\, \%$.

Hence, oxygen is the most abundant element on earth's crust.

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