This set of Hazardous Waste Management Multiple Choice Questions & Answers (MCQs) focuses on “Characterization – Toxicity Test”.
1. Toxicity is characterized by _______
Explanation: Identified character of toxicity is the concentration of lethal dosage, also known as LD50.
2. A waste to be called toxic, acute oral LD50 concentration should be _______ mg/kg.
Explanation: A waste to be called acute oral toxic, LD50 concentration should be less than 2,500 milligrams per kilogram.
3. A waste to be called toxic, acute dermal LD50 concentration should be ________ mg/kg.
Explanation: A waste to be called acute dermal toxic, LD50 concentration should be less than 4300 milligrams per kilogram.
4. LC50 is associated with toxicity.
Explanation: LC50 is the measurement of micrograms or milligrams of material per liter or ppm of air or water. Lower the amount, more toxic the material.
5. A waste to be called toxic, acute inhalation LC50 concentration should be _______ ppm.
Explanation: A waste to be called acute inhalation toxic, LC50 concentration should be less than 10000ppm.
6. ________ test is done to determine toxicity level of waste.
Explanation: Extraction Procedure (EP), EP toxicity test is designed to identify which particular toxic constituent causes damage when improperly managed.
7. Leaching actions are observed for finding toxicity concentrations.
Explanation: Leachate from landfill is extracted to analyse the concentration of toxic contaminants.
8. Maximum concentration of D004 waste is ________ mg/L.
Explanation: The hazardous contaminant that has hazardous waste number D004 according to EPA is arsenic. The maximum concentration of arsenic is 5mg/L.
9. Maximum concentration of D009 waste is ________ mg/L.
Explanation: The hazardous contaminant that has hazardous waste number D009 according to EPA is mercury. The maximum concentration of mercury is 0.2mg/L.
10. Maximum concentration of D015 waste is _________ mg/L.
Explanation: The hazardous contaminant that has hazardous waste number D015 according to EPA is toxaphene. The maximum concentration of toxaphene is 0.5mg/L.
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