Toxicity Assessment MCQ

Test your knowledge with important Toxicity Assessment MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Toxicity Assessment MCQs on Bissoy. Bissoy App

• LD50 in a toxicity test stands for ______
  ক

  a dose that will kill 50% of an exposed population

  খ

  a dose that would not affect or harm 50% of an exposed population

  গ

  a dose that will kill 25% of an exposed population

  ঘ

  a dose that would not kill 25% of an exposed population
• What is the third step of risk assessment?
  ক

  Hazard identification

  খ

  Toxicity assessment

  গ

  Exposure assessment

  ঘ

  Corrosivity assessment
• What is the main objective of toxicity assessment?
  ক

  To determine source of pathway

  খ

  To determine chemical concentration

  গ

  To estimate how much of a substance does what kind of harm.

  ঘ

  To analyse chemical exposure
• Which toxicity test is preferable to determine the acute or chronic toxicity of air, water and wastewater discharges or total pollutant loads?
  ক

  Indirect toxicity test

  খ

  Direct toxicity test

  গ

  Chemical analysis

  ঘ

  High toxicity test
• _________ is an interpretation tool which enables toxicity of unknown mixtures of chemicals be converted into the concentration of an equivalently toxic reference substance.
  ক

  Toxicity equivalencing

  খ

  Toxicity index

  গ

  Toxicity proportion

  ঘ

  Toxicity interpretation
• Results from long-term exposure to lower doses of a chemical is known as ________
  ক

  Acute toxicity

  খ

  Chronic toxicity

  গ

  Moderate toxicity

  ঘ

  High toxicity
• Toxicity test is the experimental study of the adverse effects of exposure of a living organism to a substance for a defined duration under defined conditions.
  ক

  True

  খ

  False
• What is toxicity equivalence factor?
  ক

  Ratio of the toxicity of a chemical to that of another structurally related chemical (or index compound) chosen as a reference

  খ

  Ratio of the toxicity of a contaminant to that of another structurally related chemical (or index compound) chosen as a reference
• Which of the following is not characteristics of hazardous waste?
  ক

  Toxicity

  খ

  Corrosivity

  গ

  Ignitibility

  ঘ

  Leakage
• ___________ establishes the relationship between the contaminant/s of concern and the receptor.
  ক

  Hazard identification

  খ

  Toxicity assessment

  গ

  Risk characterisation

  ঘ

  Exposure assessment
• What are the steps involved in evaluation of toxicity?
  ক

  hazard identification and dose-response evaluation

  খ

  chemical analysis

  গ

  pathway analysis

  ঘ

  evaluation of long term impact