Top Mark Questions and Correct Verified Answers
CA BRANCH 3 Questions and Correct
Verified Answers
Ld 50 (lethal dose)
Axwrtlethal dose (in mg/kg) required to kill 50% of a large population of test animals
ld50= 0-50 mg/kgzz
Lc 50 (lethal concentrate)
Axwrtis the lethal concentration in air or water (in mg/ kg) required to kill 50% of the
test animalszz
Sympyoms for ld50
Axwrt1) acute oral: single dose ingested by mouth
2) acute dermal: single dose applied to skin
3) inhalation : exposure through breathingzz
Acute toxicity
Axwrtrapid response to a single exposure or does of a chemical, often within mins or
hourszz
Top Mark !!!
, Top Mark Questions and Correct Verified Answers
Chronic toxicity
Axwrtrepeated exposures over time at sub-lethal dose of chemicalszz
Danger
Axwrtcategory i, highly toxic, ld50= 0-50 mg/kg (a taste to a teaspoon can kill youzz
Warning
Axwrtcategory ii, moderately toxic, ld50= 500-5000 mg/kg (an ounce to more than a
pint can kill you)zz
Caution
Axwrtcategory iii, slightly toxic, ld50= 500- 5000 mg/kg (an ounce to more than a pint
can kill you)zz
Sc
Axwrtsuspension concentratezz
Net contents
Axwrttells how much formulation is in the containerzz
Top Mark !!!
CA BRANCH 3 Questions and Correct
Verified Answers
Ld 50 (lethal dose)
Axwrtlethal dose (in mg/kg) required to kill 50% of a large population of test animals
ld50= 0-50 mg/kgzz
Lc 50 (lethal concentrate)
Axwrtis the lethal concentration in air or water (in mg/ kg) required to kill 50% of the
test animalszz
Sympyoms for ld50
Axwrt1) acute oral: single dose ingested by mouth
2) acute dermal: single dose applied to skin
3) inhalation : exposure through breathingzz
Acute toxicity
Axwrtrapid response to a single exposure or does of a chemical, often within mins or
hourszz
Top Mark !!!
, Top Mark Questions and Correct Verified Answers
Chronic toxicity
Axwrtrepeated exposures over time at sub-lethal dose of chemicalszz
Danger
Axwrtcategory i, highly toxic, ld50= 0-50 mg/kg (a taste to a teaspoon can kill youzz
Warning
Axwrtcategory ii, moderately toxic, ld50= 500-5000 mg/kg (an ounce to more than a
pint can kill you)zz
Caution
Axwrtcategory iii, slightly toxic, ld50= 500- 5000 mg/kg (an ounce to more than a pint
can kill you)zz
Sc
Axwrtsuspension concentratezz
Net contents
Axwrttells how much formulation is in the containerzz
Top Mark !!!
