1. Why is it important to know the toxic mechanism of a
poison?
a) To know what vital function will be
affected.
b) To know the potential severity of the
case.
c) It helps to decide what course of
action will be taken.
d) All of the above.

2. A classical example of a poison that can give both
systemic and local effects is:
a) Oxalic acid.
b) Sulfuric acid.
c) Alkali
d) All of the above.

3. Types of hypoxia include
a) Hypoxic hypoxia
b) Anemic hypoxic
c) Cytotoxic hypoxia
d) Stagnant hypoxia
e) All of the above

4. Which of the following is a direct toxic
mechanism:
a) Binding of the poison to cellular protein.
b) Inhibition of an enzyme.
c) Burning of the skin by a mineral acid.
d) Formation of a toxic metabolites.

5. Which of the following indicators is most helpful to you in deciding
whether you have a case of poisoning or not?
a) Signs and symptoms.
b) Laboratory analysis.
c) A witness saw the incidence.
d) Presence of the poison with poisoned
person.

6. In general, which of the following factors is the most important
regarding the expected severity of a case of poisoning?
a) Dose of the poison.
b) Age of the person.
c) Sex of the person.
d) Form of the substance.
e) Route of exposure.

7. Why is it important to know the toxic
mechanism of a poison?
a) To know what vital function will be affected.
b) To know the potential severity of the case.
c) It helps to decide what course of action will be taken.
d) All of the above.
e) Only A & C.

8. The source of poison that give least frequent number of cases
but most serious is:
A. Animal source.
B. Plant source.
C. Chemical source.
D. All of the above give almost the same
frequency of cases.

9. When a poison is inhaled what methods you will be
thinking of to manage the case?
a) Induction of emesis.
b) Carrying out a gastric lavage.
c) Thinking of an active elimination technique.
d) Administration of a suitable antidote.
e) Both (C) & (D) are possible.

10. The following is a good example of direct toxic
mechanism:
a) A burn of student hand in the lab by a sulfuric
acid.
b) Inhibition of AchE in a case of organophosphate
poisoning.
c) Death due to asphyxia by CO poisoning.
d) Interruption of protein synthesis by a heavy
metal.
e) Depletion of liver glutathione by paracetamol
poisoning.

11. Absorption of the poison is more by:
A) inhalation
B) ingestion
C) Skin contact
D) Absorption is similar in all
routes

12. Absorption of the poison means
A) Poison reaches circulation
B) Poison leaves blood to tissues
D) Effect of the poison on receptors
E) none of the above

13. Which of the following poisons can be
identified by smell?
A. parathion.
B. Alcohol.
C. Hashish.
D. All of the above.
E. None of the above.

14. • Which of the following corrosive acids
can cause both local and systemic
action?
A. Oxalic acid.
B. Hydrochloric acid.
C. Sulfuric acid.
D. All of the above.

15. Select the wrong statement
a) Toxicology is the science of poisons
b) Forensic toxicology deals with the
identification of legal aspects of
poisoning
c) The poison is the substance that
causes harmful effects to the living
organism
d) All poisons are toxins