Q. What is the main health risk associated with prolonged exposure to asbestos?
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A.
Lung cancer
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B.
Skin irritation
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C.
Hearing loss
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D.
Kidney damage
Solution
Prolonged exposure to asbestos is primarily associated with an increased risk of lung cancer and mesothelioma.
Correct Answer:
A
— Lung cancer
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Q. What is the primary effect of high levels of carbon monoxide exposure?
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A.
Respiratory failure
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B.
Cyanosis
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C.
Hypoxia
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D.
Pulmonary edema
Solution
High levels of carbon monoxide exposure primarily lead to hypoxia due to its binding to hemoglobin.
Correct Answer:
C
— Hypoxia
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Q. What is the primary health effect of exposure to lead?
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A.
Neurological damage
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B.
Liver failure
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C.
Respiratory issues
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D.
Cardiovascular disease
Solution
Exposure to lead primarily causes neurological damage, particularly in children.
Correct Answer:
A
— Neurological damage
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Q. What is the primary mechanism of action of ionizing radiation in causing cellular damage?
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A.
Direct DNA damage
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B.
Inhibition of protein synthesis
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C.
Disruption of cell membrane integrity
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D.
Alteration of metabolic pathways
Solution
Ionizing radiation primarily causes direct DNA damage, leading to mutations and cell death.
Correct Answer:
A
— Direct DNA damage
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Q. What type of radiation is primarily responsible for skin cancer due to UV exposure?
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A.
Alpha particles
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B.
Beta particles
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C.
Gamma rays
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D.
Ultraviolet rays
Solution
Ultraviolet rays are primarily responsible for skin cancer due to their ability to damage DNA in skin cells.
Correct Answer:
D
— Ultraviolet rays
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Q. Which chemical agent is a potent carcinogen found in tobacco smoke?
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A.
Formaldehyde
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B.
Benzene
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C.
Nitrosamines
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D.
Acetaldehyde
Solution
Nitrosamines are potent carcinogens found in tobacco smoke and are linked to various cancers.
Correct Answer:
C
— Nitrosamines
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Q. Which chemical agent is commonly used as a disinfectant due to its ability to denature proteins?
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A.
Ethanol
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B.
Chlorine
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C.
Hydrogen peroxide
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D.
Formaldehyde
Solution
Chlorine is widely used as a disinfectant because it effectively denatures proteins and kills microorganisms.
Correct Answer:
B
— Chlorine
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Q. Which chemical agent is known for its neurotoxic effects and is often found in pesticides?
-
A.
Organophosphates
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B.
Acetaminophen
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C.
Ibuprofen
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D.
Sodium chloride
Solution
Organophosphates are known for their neurotoxic effects and are commonly used in pesticides.
Correct Answer:
A
— Organophosphates
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Q. Which of the following is a common physical agent that can cause thermal burns?
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A.
Steam
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B.
Chlorine gas
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C.
Benzene
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D.
Lead
Solution
Steam is a common physical agent that can cause thermal burns due to its high temperature.
Correct Answer:
A
— Steam
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Q. Which physical agent is used in radiation therapy to target cancer cells?
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A.
Ultrasound
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B.
X-rays
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C.
Microwaves
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D.
Infrared radiation
Solution
X-rays are commonly used in radiation therapy to target and destroy cancer cells.
Correct Answer:
B
— X-rays
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