Sterilization Questions: Microbiology Quiz!

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1. Ethylene oxide gas is highly explosive in mixtures of >3.6% v/v in air.

Explanation

Ethylene oxide gas is highly explosive in mixtures of >3.6% v/v in air. This means that if the concentration of ethylene oxide gas in the air is higher than 3.6% by volume, it can easily ignite and explode. This highlights the extreme danger associated with ethylene oxide gas and emphasizes the need for proper handling and storage measures to prevent accidents and ensure safety.

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Sterilization Questions: Microbiology Quiz! - Quiz

Explore the Sterilization Questions: Microbiology Quiz to test your knowledge of microbial contamination, sterilization methods, and sterilizer design. This quiz assesses understanding of crucial sterilization processes, vital for... see moreprofessionals in microbiology and related fields. see less

2. The initial microbial contamination level influences the time-dependent process( elimination of viable microorganisms)

Explanation

The initial microbial contamination level has an impact on the time it takes to eliminate viable microorganisms. Higher levels of contamination may require more time and effort to completely eliminate the microorganisms, while lower levels may be easier and quicker to eliminate. This suggests that the initial contamination level plays a role in the time-dependent process of eliminating viable microorganisms.

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3. The elevated temperatures generally associated with moist heat sterilization methods can only be achieved by:

Explanation

The correct answer is the generation of steam under pressure. Moist heat sterilization methods, such as autoclaving, rely on the generation of steam under pressure to achieve elevated temperatures. This process effectively kills microorganisms by denaturing proteins and disrupting cell membranes. Pure ethylene oxide gas is used in another type of sterilization method called gas sterilization. While ethylene oxide gas also has broad-spectrum biocidal activity, it does not rely on elevated temperatures. Oxidative processes can be involved in sterilization methods, but they are not specific to moist heat sterilization.

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4. Which of the following is INCORRECT:

Explanation

Formaldehyde can be detected by smell at concentrations lower than those permitted in the atmosphere.

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5. Which of the following is INCORRECT:

Explanation

Filtration sterilization can indeed be used for the clarification and sterilization of liquids and gases. This method involves passing the liquid or gas through a filter that traps and removes microorganisms, thereby clarifying and sterilizing the substance. Therefore, the statement that filtration sterilization cannot be used for clarification and sterilization of liquids and gases is incorrect.

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6. Ethylene oxide sterilization needs a higher temperature than formaldehyde.

Explanation

Ethylene oxide sterilization does not necessarily require a higher temperature than formaldehyde. The temperature required for sterilization depends on various factors such as the type and size of the item being sterilized, the desired level of sterilization, and the specific sterilization method being used. While ethylene oxide sterilization typically involves lower temperatures, formaldehyde can also be used at lower temperatures for certain applications. Therefore, the statement that ethylene oxide sterilization requires a higher temperature than formaldehyde is false.

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7. Which of the following is CORRECT regarding Sterilizer design and  Sterilizer operation.

Explanation

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8. Which of the following is CORRECT:

Explanation

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9. Which of the following is CORRECT:

Explanation

Mould spores are known to be highly resistant to UV light, making them the most resistant when it comes to sterilization using UV light. This implies that other microorganisms may not be as resistant and can be effectively sterilized using UV light.

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10. Dry heat sterilization used for hydrogenation of glassware.

Explanation

Dry heat sterilization is a method used to sterilize glassware by exposing it to high temperatures in the absence of moisture. It is not used for hydrogenation, which is a chemical reaction that involves the addition of hydrogen to a compound. Therefore, the statement is false.

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Ethylene oxide gas is highly explosive in mixtures of >3.6% v/v in...
The initial microbial contamination level influences the...
The elevated temperatures generally associated with moist heat...
Which of the following is INCORRECT:
Which of the following is INCORRECT:
Ethylene oxide sterilization needs a higher temperature than...
Which of the following is CORRECT regarding Sterilizer design...
Which of the following is CORRECT:
Which of the following is CORRECT:
Dry heat sterilization used for hydrogenation of glassware.
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