Best virucidal disinfectant is?
Correct Answer: Formaldehyde
Description: Ans. is 'd' i.e., Formaldehyde Among the options, formaldehyde is high level disinfectant. Categories of effective potency Sterilants :- are capable of completely eliminating or destroying in all forms of microbial life, including spores. Disinfectants :- Destroy some, but not necessarily all organisms. The category is fuher divided into subcategories:- i) High level disinfectants :- In their usual concentration and contact period, they destroy all microorganisms, with exception of high number of bacterial spores ( small number of spores can be destroyed). It is woh noting that at higher concentrations and prolonged contact period, high level disinfectant can act as steriliant, i.e. can kill high numbers of spores as well. Examples are :-2% gluteraldehyde, 8% formaldehyde, 6-10% hydrogen peroxide and ethylene oxide gas. ii) Intermediate level disinfectants :- Inactivate even resistant organisms such as mycobacterium tuberculosis as well as vegetative bacteria, most viruses and most fungi, but do not necessarily kill bacterial spores. Examples are :-0.5% iodine, 70-90% ethanol and isopropanol, chlorine compounds (hypochlorite), some phenolic compounds and iodophor based disinfectants. iii) Low level disinfectants :- kill most bacteria, some viruses and some fungi, but cannot be relied on to kill resistant microorganisms such as tubercular bacilli or bacterial spores. Examples are :- quaerly ammonium compounds, mercurials,some phenolic compounds and iodophores. Note:- the disinfectant levels of iodophors (iodines) and phenolic compounds may be classified as intermediate or low depending on the concentration employed.
Category:
Microbiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now