BIOSAFETY CABINETS

Question 1

provides protection to the sample and not to
the personnel and the environment

A. BIOSAFETY CABINETS
B. laminar hood

Answer 1

B. laminar hood

Question 2

**when used correctly in conjunction with useful microbiological techniques, these provide an effective containment system for safe manipulation of moderate and high-risk microorganisms

A. CLASS 3
B. CLASS 4
C. CLASS 1 AND 2
D. CLASS 4

Answer 2

C. CLASS 1 AND 2

Question 3

BSCs are most suitable for work with hazardous agents

A. CLASS 3
B. CLASS 4
C. CLASS 1 AND 2
D. CLASS 4

Answer 3

A. CLASS 3

Question 4

The most basic biosafety cabinet that provides protection to the environment and the laboratory personnel.
* It doesn’t, however, provide protection to the product as the unsterilized room air is drawn over the work surface.

A. CLASS 3
B. CLASS 2
C. CLASS 1 AND 2
D. CLASS 1

Answer 4

D. CLASS 1

Question 5

** protect the operator and the environment from the aerosol but not the sample**

A. CLASS 3
B. CLASS 2
C. CLASS 1 AND 2
D. CLASS 1

Answer 5

D. CLASS 1

Question 6

** Cabinets provide both kinds of protection (of the samples and the environment) since makeup air is also HEPA- filtered.**

A. CLASS 3
B. CLASS 2
C. CLASS 1 AND 2
D. CLASS 1

Answer 6

B. CLASS 2

Question 7

1 cabinets have a minimum inflow velocity of 75ft/min where the contaminated divided just above the work station and mixes with the inflow air
* This type of cabinet is not as widely used as it is not safe to work with hazardous chemical substances.

A. Type A1
B. Type A2
C. Type B1
D. Type B2
E.TYPE C1

Answer 7

A. Type A1

Question 8

cabinets have a minimum inflow velocity of 100 ft/min.

A. Type A1
B. Type A2
C. Type B1
D. Type B2
E.TYPE C1

Answer 8

B. Type A2

Question 9

the air is drawn in from the front opening creating an air barrier that protects the operator

A. Type A1
B. Type A2
C. Type B1
D. Type B2
E.TYPE C1

Answer 9

D. Type B2

Question 10

Because of the chances of the release of hazardous chemicals into the environment, - type cabinets arealso not extensively used

A. Type A1
B. Type A2
C. Type B1
D. Type B2
E.TYPE C1

Answer 10

B. Type A2

Question 11

they use single-pass airflow
to control the flow of hazardous vapors.

A. Type A1
B. Type A2
C. Type B1
D. Type B2
E.TYPE C1

Answer 11

C. Type B1

Question 12

cabinets, 40% of the air is recirculated, whereas theremaining 60% is exhausted out of the facility.

A. Type A1
B. Type A2
C. Type B1
D. Type B2
E.TYPE C1

Answer 12

C. Type B1

Question 13

**The air then passes through a HEPA filter, where 100% of the air is exhausted through a dedicated duct system with an exhaust fan motor. **

A. Type A1
B. Type A2
C. Type B1
D. Type B2
E.TYPE C1

Answer 13

D. Type B2

Question 14

** none of the air is recirculated, these cabinets are the best to be used for tasks involving the release of chemical vapors.**
A. Type A1
B. Type A2
C. Type B1
D. Type B2
E.TYPE C1

Answer 14

D. Type B2

Question 15

** expensive, and their use is limited to toxicology laboratories where protection against hazardous chemicals is imperative**

A. Type A1
B. Type A2
C. Type B1
D. Type B2
E.TYPE C1

Answer 15

D. Type B2

Question 16

cabinets are similar to Type B cabinets in their working mechanism, but these are designed to reduce operating costs add flexibility to the laboratories

A. Type A1
B. Type A2
C. Type B1
D. Type B2
E.TYPE C1

Answer 16

E.TYPE C1

Question 17

These cabinets work by using the single-pass airflow system where the cabinets move the air by mixing it with the downflow air separated into columns for recirculation.

A. Type A1
B. Type A2
C. Type B1
D. Type B2
E.TYPE C1

Answer 17

E.TYPE C1

Question 18

** These differ from Type B cabinets in that they don’t require a dedicated ducted exhaust system, can work for an extended duration to increase operator protection in the case of exhaust failure, andcan even run without the exhaust at all.

A. Type A1
B. Type A2
C. Type B1
D. Type B2
E.TYPE C1

Answer 18

E.TYPE C1

Question 19

** The cabinets are provided with rubber gloves that are attached to the system to be used during operations in the cabinet. This is why these cabinets are also termed ‘glove boxes

a. class 1
b. class 2
c. class 4
d. class 3

Answer 19

d. class 3