Hazardous Waste Management Multiple Choice Questions on “Eco Toxicity”
1. Eco-toxicology is the study of ________
a) Chemical interactions of organism and environment
b) Physical interactions of organism and environment
c) Thermal interactions of organism and environment
d) Biological interactions of organism and environment
Answer: a
Clarification: Eco-toxicology deals with how chemicals interact with organisms as well as the environment and their impacts.
2. Hazard estimation in ecotoxicology is done based on _______
a) Accumulation
b) Bio-accumulation
c) SARA
d) HWL
Answer: b
Clarification: Hazard estimation and estimation in ecotoxicology is done based on the concentration of bio-accumulation of a chemical in food chain.
3. Eco-toxicology is based on ______ of chemicals.
a) Chemical
b) Physical
c) Toxicological
d) Biological
Answer: c
Clarification: Eco-toxicology is based on toxicological characteristics of chemicals and their susceptibility in the environment.
4. Acute aquatic toxicity is measured in _______
a) EC
b) AS
c) PS
d) CB
Answer: a
Clarification: Acute aquatic toxicity is measured with respect to the concentration of effected organism i.e. EC50 or survive treatment LD50.
5. Chronic toxicity is based on _______
a) NOEC
b) AOEC
c) SOEC
d) QEOC
Answer: a
Clarification: Chronic toxicity is based on no observed effect concentration (NOEC) or lowest observed effect concentration (LOEC) of an event.
6. According to TURI which tool is used for determining aquatic toxicity?
a) P2SD
b) P3SFD
c) P2OASys
d) P20FR
Answer: c
Clarification: The Toxics Use Reduction Institute (TURI) framework suggests Pollution Prevention Options Assessment System (P2OASys) tool for aquatic toxicity.
7. Toxicity ranking from ToxPi is based on ________
a) Suborganismal tests
b) Organismal test
c) P2SO
d) EC100
Answer: a
Clarification: Toxicity ranking from ToxPi is based on suborganismal tests for which the data have been collected for each chemical under consideration.
8. ______ models provide ecotoxicity endpoint.
a) QASR
b) QSAR
c) QAWS
d) QSEA
Answer: b
Clarification: Quantitative Structure Activity Relationships models estimates various ecotoxicity end points on the basis of chemical structure.
9. _________ species is used as screening of chemicals.
a) Eisinia foetida
b) Folsomia candida
c) Enchytraeus albidus
d) Zebrafish
Answer: d
Clarification: The zebrafish which is known as Danio rerio is used in high throughput screening for chemicals.