Question

# Which of the following organic compound is used to preserve biological specimen?

A
HCHO
B
CH3COOH
C
HCOOH
D
CH3CH2OH

Solution

## The correct option is B $$HCHO$$Formalin is 40% aqueous solution of HCHO which is a pungent gas and used as an antiseptic, disinfectant and as a fixative for histology preserving the biological specimen in laboratories. In it, the tissues are preserved to study under the microscope.Chemistry

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