Alcohols are more effective at inactivating enveloped viruses than naked viruses

Question

Alcohols are more effective at inactivating enveloped viruses than naked viruses. True False QUESTION 19 lodophors include: O Chloramines O Betadine. O Tincture of iodine. O Alcohols O Chlorhexidine QUESTION 20 All of the following are correct about the autoclave, except it is important not to overload the chamber it is effective for sterilizing powders, oils, and waxy substances. the duration of the process depends on how full the chamber is. O it is the temperature that kills the microbes, not the pressure by itself. O sterilization is achieved when steam condenses against the objects in the chamber and raises their temperatures QUES TION 21

Explanation / Answer

1. The statement is true. Enveloped viruses have lipid on their exterior due to which they are susceptible to more disinfectants than uncoated viruses (like alcohol). Lipids are easily soluble in organic solvents like ethanol.

2. Option 2nd is the correct answer. An Iodophor indicates a preparation containing iodine complexed with a solubilizing agent, such as a surfactant or povidone (forming povidone-iodine). Betadine is an antiseptic non-sterile preparation containing povidone-iodine.

3. Option 2nd is the correct answer. Powders can become wet/ watery because autoclave uses ateam to sterlize and oil and waxy substances can degrade under steam and high pressure condition.

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