Formalin is an aqueous solution of

  1. A

    40% formaldehyde

  2. B

    50% formaldehyde

  3. C

    60% formaldehyde

  4. D

    70% formaldehyde

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    Solution:

    40% formaldehyde is known as formalin. It is known as formalin when it is dissolved in water and is frequently employed as preservation in funeral homes and medical labs as well as an industrial disinfectant. Additionally, it may be utilized as a preservative in various meals and items including antiseptics, medications, and cosmetics.

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