Beauty Therapist - Qp14

Explanation
Ultraviolet rays are indeed effective in sterilization, but they are not the most effective method. Other methods like high heat, steam, and chemical disinfectants can also be highly effective in sterilization. Therefore, the statement that ultraviolet rays are the most effective method of sterilization is false.

Explanation
Autoclaves are used for sterilization purposes and operate under high pressure and temperature to kill microorganisms effectively. The correct answer is 121 degrees Celsius, 15 minutes. This combination of temperature and time ensures the destruction of most bacteria, viruses, and spores. The higher temperature of 121 degrees Celsius is preferred over 120 degrees Celsius to provide an extra margin of safety. The longer duration of 15 minutes allows for sufficient exposure to heat, ensuring thorough sterilization.

Explanation
Washing tools in warm soapy water and rinsing them in clean water before disinfecting or sterilizing is an important step in maintaining hygiene and preventing the spread of bacteria or germs. Warm soapy water helps to remove dirt, debris, and organic matter from the tools, making the disinfection or sterilization process more effective. Rinsing in clean water ensures that any remaining soap or residue is removed. Therefore, it is necessary to wash and rinse tools before proceeding with disinfection or sterilization.

Explanation
Liquid chemical sterilisers can indeed be very harmful to the skin. These sterilisers often contain strong chemicals that can cause burns, irritation, or allergic reactions if they come into contact with the skin. Therefore, it is essential to exercise caution and take proper safety measures when handling these substances to prevent any harm or injury.

Explanation
This statement is true because in order to eliminate the risks of cross-infection, it is necessary to identify any potential disease and take immediate measures. This can include implementing proper hygiene practices, isolating infected individuals, and providing appropriate medical treatment. By promptly addressing and containing potential diseases, the chances of cross-infection can be significantly reduced or eliminated altogether.

Explanation
This statement is false. Ultraviolet rays do have a sterilizing effect, but they have a relatively low rate of penetration. Ultraviolet rays are easily blocked by surfaces such as glass and clothing, which limits their ability to penetrate and sterilize objects or organisms. Therefore, the given statement is incorrect.

Explanation
Glass bead sterilisers reach temperatures of one hundred and ninety degrees.

Explanation
Disinfectants not only reduce the number of organisms, but they also eliminate or kill them completely. They are specifically designed to destroy or inhibit the growth of microorganisms such as bacteria, viruses, and fungi, making the environment or surface safe and free from harmful pathogens. Therefore, the statement "Disinfectants do not only reduce the number of organisms" is false.