जॉइन Examsbook
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प्र: Which of the following is used to preserve specimens in the biology laboratory?

  • 1
    Phenol
  • 2
    Benzaldehyde
  • 3
    Formaldehyde
  • 4
    Acetic acid
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उत्तर : 3. "Formaldehyde"
व्याख्या :

Answer: C) Formaldehyde Explanation: A 40% solution of Formaldehyde known as Formalin is used in the preservation of biological specimens because of its hardening action on proteins.

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