Introduction to Health and Safety at Work

14.15 
Practice NEBOSH questions for 
Chapter 14
1. Health hazards in the workplace may be trans-
ported by various chemical and biological agents. 

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Chemical and biological health hazards and control
247
Describes THREE
chemical and 
THREE
biological 
hazardous agents giving an example in each case.
2. (a) 
Defi ne
the term ‘respirable dust’
(b) 
Outline
methods used to measure the levels of 
airborne dust in the workplace.
3. For each of the following types of hazardous sub-
stance, give a typical example and 
state
its primary 
affect on the body:
(i) toxic
(ii) 
corrosive
(iii) 
carcinogenic
(iv) 
irritant.
4. (a)
Describe
the differences between acute and 
chronic health effects
(b) 
Identify
the factors that could affect the level of 
harm experienced by an employee exposed to a 
toxic substance
(c) 
Give TWO
acute and 
TWO
chronic health affects 
on the body from exposure to lead.
5. (a)
Identify
possible routes of entry of biological 
organisms into the body
(b) 
Outline
control measures that could be used 
to reduce the risk of infection from biological 
organisms.
6. (a)
Defi ne
the term ‘target organ’ within the context 
of occupational health
(b) 
Outline
the personal hygiene practices that 
should be followed to reduce the risk of inges-
tion of a hazardous substance
(c) 
Describe
the respiratory defence mechanisms 
of the body against atmospheric dust.
7. (a)