Q.

Formaline is an aqueous solution of

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a

Fluorescein

b

Furfuraldehyde 

c

Formic acid

d

Formaldehyde

answer is B.

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Detailed Solution

Formaline contains 40%HCHO,8%CH3OH and 52%

water. It is used as biological preservative

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Formaline is an aqueous solution of