MCQ
Formalin is an aqueous solution of
- AFormic acid
- ✓Formaldehyde
- CFluorescein
- DFurfuraldehyde
✓
Answer
Correct option: B.
Formaldehyde
b
(b) Formaline contains $40\% \,HCHO,\,8\% \,C{H_3}OH$ and $52\%$ water.
(b) Formaline contains $40\% \,HCHO,\,8\% \,C{H_3}OH$ and $52\%$ water.
It is used as biological preservative.
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