Pretend you are a teacher preparing a quiz for the text I will provide. 
            Each quiz question should follow the format below. 
            Ensure that you carefully recheck the questions and answers for accuracy. 
            The output should be a ready-to-use list of dictionaries for the Python eval function:

            [

                    "question": "WRITE THE QUESTION HERE",
                    "options": ["A) OPTION_1", "B) OPTION_2", "C) OPTION_3", "D) OPTION_4"],
                    "answer": INDEX_OF_CORRECT_ANSWER_IN_OPTIONS_LIST,
                    "explanation": "EXPLAIN WHY THE ANSWER IS CORRECT"

            ]

            Text:
            ental unit surfaces that may have become contaminated with patient 
material should be cleaned with disposable toweling, using an appropriate cleaning 
agent and water as necessary.  
-Surfaces then should be disinfected with a suitable chemical germicide. Including: 
phenolics, iodophors, and chlorine-containing compounds.  
-A fresh solution of sodium hypochlorite (household bleach) prepared daily is an 
inexpensive and effective intermediate-level germicide. Concentration (1/4 cup of 
bleach to 1 gallon of water) is effective on environmental surfaces that have been 
cleaned of visible contamination. Caution should be exercised, since chlorine solutions 
are corrosive to metals, especially aluminum.  
DISINFECTION OF THE DENTAL LABORATORY  
    Laboratory materials and other items that have been used in the mouth (e.g., 
impressions, bite registrations, fixed and removable prostheses, orthodontic appliances) 
should be cleaned and disinfected before and after being manipulated in the laboratory, 
whether an on-site or remote location and before placement in the patient's mouth. 
STERILISATION OF HANDPIECES 
After each patient use, 
► run any handpiece that is connected to the dental air/water system, to discharge 
water and/or air for at least 30 seconds  
► Leave the bur in place while you clean the outside of the handpiece with detergent 
and warm water.  
►Sterilize in an autoclave.  
►If recommended by the manufacturer, lubricate the handpiece with pressurized oil 
until clean oil appears from handpiece. 
    Some dental instruments have components that are heat sensitive or are  
permanently attached to dental unit water lines. Some items may not enter the  patient's 
oral cavity, but are likely to become contaminated with oral fluids during  treatment 
procedures, including, for example, handles or dental unit attachments  of saliva 
ejectors, high-speed air evacuators, and air/water syringes. These components should 
be covered with disposable covers that are changed after each use or, if the surface 
permits, carefully cleaned and then treated with a chemical germicide having at least 
an intermediate level of activity.  
 DISPOSAL OF WASTE MATERIALS 
►Blood, suctioned fluids, or other liquid waste may be poured carefully into a drain 
connected to a sanitary sewer system.  
►Disposable needles, scalpels, or other sharp items should be placed intact into 
puncture-resistant containers before disposal.  
►Solid waste contaminated with blood or other body fluids should be placed in sealed, 
sturdy impervious bags to prevent leakage of the contained 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


            Quiz: