Poisons – Definitions & Classification MCQ Quiz | General Toxicology

Welcome to this specialized quiz on the Definitions and Classification of Poisons, a fundamental topic in General Toxicology for MBBS students. This quiz is designed to test your understanding of core concepts, including the definition of a poison, various classification systems (based on origin, action, and medico-legal aspects), and key terms like LD50 and toxidromes. You will encounter 25 multiple-choice questions that mirror the format and complexity of university examinations. After submitting your answers, you will receive your score immediately, with correct and incorrect answers highlighted for review. For your future reference and revision, an option to download all questions with their correct answers in PDF format is also available.

1. Who famously stated, “All things are poison, and nothing is without poison; the dosage alone makes it so a thing is not a poison”?

2. The term LD50 refers to the:

3. What is the primary difference between a ‘toxin’ and a ‘toxicant’?

4. According to the classification based on origin, snake venom is considered a:

5. Strong acids like sulphuric acid and nitric acid are classified based on their action as:

6. Organophosphate compounds, commonly found in insecticides, are primarily classified as:

7. Carbon monoxide is a classic example of which type of poison?

8. Which of the following falls under the medico-legal classification of poisons?

9. Heavy metals like lead and mercury are known as cumulative poisons because they:

10. A ‘toxidrome’ is best defined as:

11. The key difference between a local and a systemic poison is that a local poison:

12. Which of the following is NOT a characteristic of an ideal suicidal poison from a toxicological perspective?

13. Historically, which substance was known as the “king of poisons” and “inheritance powder” due to its discreet use in homicides?

14. Abortifacient poisons are substances that are used to:

15. Datura (Dhatura) is classified as a stupefying agent, also known as a:

16. Ricin, a highly toxic substance, is an example of an organic irritant derived from:

17. Which of the following is an example of an inorganic irritant poison?

18. Under the classification based on physical state, which of the following is considered a gaseous poison?

19. The term ‘Xenobiotic’ refers to:

20. Acute poisoning is characterized by:

21. Chronic poisoning results from:

22. Digitalis (from Foxglove) and Aconite are examples of poisons that primarily affect which system?

23. Scombrotoxin, which causes poisoning from improperly stored fish, is classified as a:

24. Strychnine (Nux vomica) acts on the spinal cord to cause convulsions and is classified as a:

25. Toxicology is the study of: