Microbiology - Physical and Chemical Agents

Exercise : Physical and Chemical Agents - Section 1
  • Physical and Chemical Agents - Section 1
16.
Bactericidal concentration of phenol is
0.25%
0.5%
0.75%
1%
Answer: Option
Explanation:
No answer description is available. Let's discuss.

17.
Which of the following is most effective for sterilizing mattresses and plastic petri plates?
Chlorine
Ethylene oxide
Glutaraldehyde
Ultraviolet radiation
Answer: Option
Explanation:
No answer description is available. Let's discuss.

18.
Which of the following skin disinfectant(s) is/are most frequently used?
Isopropyl alcohol
Ethyl alcohol
Both (a) and (b)
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

19.
All of the following are sporicidal except
glutaraldehyde
ethylene oxide
formaldehyde
alcohol
Answer: Option
Explanation:
No answer description is available. Let's discuss.

20.
Which of the following describes the effect of ionizing radiation on microbes?
Changes the 3-dimensional structure of proteins to a 2-dimen-sional form
Substantially decreases enzymatic activity, slowing microbial reproduction
Induces electrons and protons to jump out of the molecules of the microbe
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.