MCQ
जिप्सम में कैल्सीअम की मात्रा कितनी होती है?
  • $29.2 \%$
  • B
    $19.5 \%$
  • C
    $39.5 \%$
  • D
    $26.5 \%$

Answer

Correct option: A.
$29.2 \%$
$29.2 \%$

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