January I

Noise:
Humans typically hear in what frequency range?

General Sciences:
Which term describes the transformation of a material from the solid state to a gaseous state?

Heat Stress:
WBGT combines the effect of which of the following?

General IH:
A HEPA filter’s effectiveness is:

IH Sampling:
Breakthrough volume of solid sorbents tends to be/have _____ for higher sampling flow rates.

Toxicology:
Carbon dioxide would be considered a/an:

Ventilation
On the upstream side of a fan, what is the VP if the TP = -0.2 “w.g. and the SP = 0.8 “w.g.?

Ergonomics:
Work and work stations should accommodate what percentile of the working population?

History:
Who devised the use of an animal bladder to protect workers from the inhalation of dust and lead fumes?

IH Sampling:
What is the minimum sample time we need to sample for, given the following:

Target concentration = 10 µg/m³
Lab LOQ = 0.5 µg
Sample Rate = 2 L/min

Diseases and Conditions:
The result of acute exposure to beryllium is typically:

Indoor Air Quality:
Radon is typically linked with:

Noise:
The reference sound pressure is defined as:

Ethics:
Occupational Hygienists shall:

IH Management:
A situational development that involves: majority decision, election, referendum, legislative vote, judicial decision, arbitration; may be defined as:

General Sciences
If a chemical’s saturated vapor concentration is much lower than the total airborne concentration, the chemical will be found primarily in the _____ phase.

IH Sampling:
True/False: The collection efficiency of filters will change with velocity.

Epidemiology: A _____ study is dependent on the quality of records that are typically recorded for other purposes.

Illumination:
Too little light in the workplace can cause:

General Sciences:
The null hypothesis:

PPE:
NaCl is used during certification to test which of the following classes of respirators?

Toxicology:
Respirable particles are typically less than:

Noise:
At 30 feet away, one piece of equipment registers a SPL of 80 dB. A second piece of equipment at 30 feet away registers a SPL of 85 dB. What is the SPL when both units are operating at 30 feet away?

IH Chemistry
Which of the following GC detectors is the most sensitive?

Radiation:
Photons and neutrons are examples of what type of radiation?

Ventilation:
Given a probe 0.25 inches in diameter and a stack velocity of 2500 fpm, what must the probe flow rate be to achieve isokinetic sampling?

IH Instrumentation:
A Photo Ionization Detector (PID) uses a _____ light source to break down chemicals into positive and negative ions.

Radiation:
In radio frequency (RF), you must measure magnetic and electric fields:

Diseases and Conditions:
Which of the following metal exposures is associated with Parkinson’s disease symptoms?

General IH:
The 6-3 rule applies to: