CSS Industrial Hygiene and Health Hazards

Question 1

What is the OSHA Permissible Exposure Limit (PEL) for an 8-hour time-weighted average (TWA) for noise in general industry?

Accepted Answer

90 dBA

Answer

85 dBA

Answer

95 dBA

Answer

100 dBA

Question 2

Which sampling method measures a worker's actual breathing zone exposure to airborne contaminants throughout a work shift?

Accepted Answer

Personal sampling

Answer

Area sampling

Answer

Grab sampling

Answer

Bulk sampling

Question 3

What term describes the concentration of a chemical at which 50% of a test animal population dies within a specified period?

Accepted Answer

LC50

Answer

TLV

Answer

LD50

Answer

IDLH

Question 4

OSHA's Hazard Communication Standard (HazCom) requires Safety Data Sheets to follow which format?

Accepted Answer

16-section GHS format

Answer

7-section ANSI format

Answer

12-section ISO format

Answer

10-section NFPA format

Question 5

Which type of health hazard results from a single short-term exposure to a high concentration of a substance?

Accepted Answer

Acute health effect

Answer

Chronic health effect

Answer

Cumulative effect

Answer

Synergistic effect

Question 6

Which industrial hygiene control is considered the most effective method for reducing worker exposure to chemical hazards?

Accepted Answer

Engineering controls — elimination or substitution

Answer

Administrative controls

Answer

Personal protective equipment

Answer

Warning signs and labels