REHS EXAM- Residential and Institutional Environmental Questions and Answers (SCORED A+)
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REHS
Institution
REHS
Cross-connection controls include air gaps, backflow preventers, vacuum breakers and
a. gate valves
b. indirect waste piping
c. air vents
d. water meters - ANSWER-b. indirect waste piping
A BSC national performance standard has been developed by
a. NSF
b. NSC
c. NIH
d. ABSA - ANSW...
REHS EXAM- Residential and Institutional Environmental Questions and Answers (SCORED A+)
Cross-connection controls include air gaps, backflow preventers, vacuum breakers and a. gate valves b. indirect waste piping c. air vents d. water meters - ANSWER-b. indirect waste piping
A BSC national performance standard has been developed by
a. NSF b. NSC c. NIH d. ABSA - ANSWER-a. NSF
Biological safety cabinets should be performance tested every a. 1 year b. 1 month c. 2 years d. 10 years - ANSWER-a. 1 year
The ASHRAE recommended minimal thermal standard for dwellings is ______ degrees F at 40% humidity and an air circulation rate of 45 fpm.
a. 57 b. 60 c. 68 d. 76 - ANSWER-d. 76
Campylobacter (C. jejuni/C. coli, C. fetus subsp. fetus) may be safely used in the laboratory as a minimum at
a. biosafety level 1 b. biosafety level 2 c. biosafety level 3 d. biosafety level 4 - ANSWER-b. biosafety level 2
Minimum wash water temperature in a hospital laundry is
a. 146 to 150 degrees F b. 160 to 167 degrees F c. 170 to 178 degrees F d. 185 to 196 degrees F - ANSWER-b. 160 to 167 degrees F
Universal precautions refer to
a. specific respiratory protection used in hospitals b. an infection control measure in which all human blood and certain body fluids are treated as infectious c. procedures used when handling hazardous wastes d. none of the above - ANSWER-b. an infection control measure in which all human blood and certain body fluids are treated as infectious
A class II biological safety cabinet (BSC) is designed to protect
a. the work being done in the BSC b. the personnel using the BSC c. the environment d. all of the above - ANSWER-d. all of the above
Mobile homes have been in general production since
a. 1943 b. 1954 c. 1965 d. 1970 - ANSWER-b. 1954
The best approach to control of formaldehyde air pollution in the home is a. avoidance of the use of formaldehyde containing products b. the coating and sealing of materials containing formaldehyde c. increasing the amount of outside air d. all of the above - ANSWER-d. all of the above
Excessive condensation, corrosion, and mildew occur when the relative humidity exceeds a. 20 percent b. 40 percent c. 80 percent d. 60 percent - ANSWER-d. 60 percent
Biological safety equipment includes a. biosafety cabinets b. non-retractable needles and syringes c. personal protective equipment d. a and c - ANSWER-d. a and c
A clean bench should be considered for use
a. as an alternative for a biosafety cabinet b. as an alternative for a fume hood c. only when there is no possible risk to personnel
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