From formaldehyde we get formalin which is powerful:

Correct answer: B. Preservative and disinfectant

  • A. Painkiller
  • B. Preservative and disinfectant
  • C. Bleaching and whitening agent
  • D. Deodorant

Explanation

Formalin is indeed a powerful preservative and disinfectant. It is derived from formaldehyde, a chemical compound commonly used in various industries. Formalin is a solution of formaldehyde dissolved in water, typically containing around 37% formaldehyde by weight. Due to its strong antimicrobial properties, formalin is widely used as a disinfectant to kill or inhibit the growth of microorganisms. It is commonly used in medical settings to sterilize equipment, preserve biological specimens, and sanitize surfaces. As a preservative, formalin helps prevent the decomposition of biological tissues or specimens by inhibiting the growth of bacteria, fungi, and other microorganisms. This makes it valuable in preserving anatomical specimens, museum specimens, and laboratory samples for research or educational purposes. However, it's important to note that formalin can be toxic and irritating to the skin, eyes, and respiratory system. Proper safety precautions should be taken when handling formalin, including the use of personal protective equipment and working in well-ventilated areas.

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About Aldehydes and Ketones

Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.

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