WorksheetsIH-Topic3
Total questions: 5
Worksheet time: 2mins
Which is incorrect about Occupational exposure limits (OELs)?
generally refer to mixtures of substances
may change from time to time
do not represent a fine demarcation between good and bad practice
are based on the current best available information
Asbestos are airborne contaminants which are quantified in
weight of the substance in parts per billion (ppb)
atmospheric concentration in parts per million (ppm)
number of fibers per mL of air (f/mL)
milligrams of substance per cubic metre of air (mg/m-3).
Effects of the constituents are from the same health effects- this describes
additive
potentiation
antagonistic
synergistic
OELs of gases X,Y and Z are not to be used for
Workers handling chemicals X, Y and Z
Residents affected in a chemical emergency
Manufacturer of the chemicals that release gases X,Y and Z
Local formulator based in Malaysia
The data for setting hygiene standards includes the use of the following, EXCEPT
Statistical study of disease patterns in groups of individuals
Toxicological studies on human
Tests conducted on animals
Human poisoning cases
