Question 1
Disinfectants decontaminate soiled and clean surfaces equally well.
A) True
B) False

Question 2
UV light can be utilized as the sole form of decontamination in a biological safety cabinet.
A) True
B) False

Question 3
The longer a surface is exposed to UV light the more likely it is to be effectively decontaminated.
A) True
B) False

Question 4
Which of the following statements about UV light is true?
A) The use of UV light in BSCs is highly recommended.
B) Lab UV light sources are the same as being outside in the sun.
C) Organisms exposed to UV light cannot repair damage.
D) BSC sash must be closed to prevent release of reflected UV.

Question 5
Hands should be washed before and after working in a biological safety cabinet.
A) True
B) False

Question 6
Which of the following practices should be utilized when working in a biological safety cabinet?
A) Disinfect the work surface of the BSC before and after work
B) Disinfect all items which go into and come out of the BSC
C) Do not store any items in the BSC
D) Allow the BSC to operate before work begins and after work ceases
E) All of the above.

Question 7
Ethanol is not a preferred disinfectant because:
A) It cannot be used in a BSC
B) It has a long contact time and a fast evaporation rate
C) It does not have broad spectrum disinfectant capability
D) All of the above.