IDRL 308 CHAPTER 5 EXAM QUESTIONS
AND ANSWERS 100% PASS
Hydraulic fracturing - ANS Process injecting fluid under high pressure to extract petroleum
Fracking chemicals - ANS Mixture of water, sand, and various harmful substances
Chemical hazards - ANS Substances causing harm to human tissue or physiological functions
Toxicity - ANS Ability of a substance to cause injury
Local toxicity - ANS Reaction at the point of contact with a harmful substance
Systemic toxicity - ANS Harmful reaction in a body area other than the point of contact
Acute toxicity - ANS Immediate harm from exposure to a chemical
Chronic toxicity - ANS Long-term harm caused by exposure to a substance
Latency period - ANS Time between exposure to a chemical hazard and symptom
development
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Oral LD50 (rat) - ANS Lethal dose of a substance for rats via ingestion
Contact dermatitis - ANS Skin inflammation from exposure to irritants or allergens
Rubber accelerators - ANS Chemicals in latex gloves causing allergic reactions
Allergic reactions - ANS Immune response causing symptoms beyond the point of contact
Occupational diseases - ANS Illnesses resulting from workplace exposures over time
PPE - ANS Personal protective equipment like gloves or masks
LD50 - ANS Dose at which 50% of animals die shortly after ingestion
Acute Toxicity - ANS Immediate harmful effects from a single exposure
Lethal Concentration (LC) - ANS Toxicity measure based on concentration in air or water
Chronic Toxicity - ANS Long-term harmful effects from repeated exposures over time
Silicosis - ANS Lung disease from prolonged silica dust exposure
Synergistic Effects - ANS Combined exposures increasing toxicity beyond individual levels
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
AND ANSWERS 100% PASS
Hydraulic fracturing - ANS Process injecting fluid under high pressure to extract petroleum
Fracking chemicals - ANS Mixture of water, sand, and various harmful substances
Chemical hazards - ANS Substances causing harm to human tissue or physiological functions
Toxicity - ANS Ability of a substance to cause injury
Local toxicity - ANS Reaction at the point of contact with a harmful substance
Systemic toxicity - ANS Harmful reaction in a body area other than the point of contact
Acute toxicity - ANS Immediate harm from exposure to a chemical
Chronic toxicity - ANS Long-term harm caused by exposure to a substance
Latency period - ANS Time between exposure to a chemical hazard and symptom
development
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Oral LD50 (rat) - ANS Lethal dose of a substance for rats via ingestion
Contact dermatitis - ANS Skin inflammation from exposure to irritants or allergens
Rubber accelerators - ANS Chemicals in latex gloves causing allergic reactions
Allergic reactions - ANS Immune response causing symptoms beyond the point of contact
Occupational diseases - ANS Illnesses resulting from workplace exposures over time
PPE - ANS Personal protective equipment like gloves or masks
LD50 - ANS Dose at which 50% of animals die shortly after ingestion
Acute Toxicity - ANS Immediate harmful effects from a single exposure
Lethal Concentration (LC) - ANS Toxicity measure based on concentration in air or water
Chronic Toxicity - ANS Long-term harmful effects from repeated exposures over time
Silicosis - ANS Lung disease from prolonged silica dust exposure
Synergistic Effects - ANS Combined exposures increasing toxicity beyond individual levels
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
