MCQ
The percentage of formaldehyde in formalin is:
- ✓$40\%$
- B$30\%$
- C$20\%$
- D$10\%$
✓
Answer
Correct option: A.
$40\%$
The percentage of formaldehyde in formalin is $40\%$
$10\ ml$ formalin contains $40\ ml$ formaldehyde and $60\ ml$ of water.
$10\ ml$ formalin contains $40\ ml$ formaldehyde and $60\ ml$ of water.
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