__________ is a disinfectant and is used for the preservation of zoological samples.
A
Formaldehyde
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B
Acetic acid
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C
Ketone
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D
Alcohol
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Solution
The correct option is A Formaldehyde Formaldehyde in its aqueous solution called formalin (40% formaldehyde) is used as a disinfectant and for preserving the samples in labs.