Nokea
The LD50 of highly toxic substance is.... mg/ kg.
- A. less than 1
- B. Jan-50
- C. 51-500
- D. 50-500
Correct Answer: A
Rationale: Highly toxic substances have an LD50 value of less than 1 mg/kg, indicating extreme toxicity.
You may also like to solve these questions
Istanbul declaration 1996 habitat II is related to:
- A. RH
- B. Health promotion
- C. PHC
- D. Population development
Correct Answer: D
Rationale: The Istanbul Declaration addressed issues related to population and sustainable development.
Describe the significance for epidemiology of the use of vital statistics.
- A. Vital statistics provide data on births and deaths.
- B. Vital statistics are irrelevant to epidemiology.
- C. Vital statistics are used only for economic analysis.
- D. Vital statistics focus solely on infectious diseases.
Correct Answer: A
Rationale: Vital statistics help track population health trends and identify outbreaks or patterns.
Level of resistance of a community or group of people to a particular disease is
- A. Passive immunity
- B. Active immunity
- C. Herd immunity
- D. None of them
Correct Answer: C
Rationale: Herd immunity refers to the resistance of a group to the spread of a contagious disease due to a significant proportion being immune.
What do vital statistics provide important sources of data on?
- A. Morbidity.
- B. Mortality.
- C. Health-related behaviors.
- D. Injury and disability.
Correct Answer: D
Rationale: Vital statistics also track injuries and disabilities, contributing to a comprehensive health overview.
The best estimate of the association between wedding cake and illness is:
- A. 6.1
- B. 7.7
- C. 68.4
- D. 83.7
Correct Answer: B
Rationale: Calculated odds ratio reflects the strength of association.