chapter 19:

1While doing gram staining, a medical student forgot to use iodine as mordent. If the slide smear had gram +ve rods. What appearance will the gram +ve rodshave on microscopy ?

Green colour Violet colour Red color Blue colour No colour

Q-2-A fifty bedded hospital with a small operation theatre was built in a small town. Out of the following which one should be recommended for sterilization of reusable items?

Autoclave Hot air oven Steamer Water bath Pasteurization system

Q-3-while working in the dental clinics, you have to be very careful about prevention of the spread of Hepatitis virus infection special care should be taken while doing any dental procedure on a patient who is infected with hepatitis B and hepatitis C. which of the following disinfectants is best to disinfect the instruments who got contaminated with hepatitis b and C viruses?