Properties and Uses of Asbestos Fibers
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Questions and Answers

Which of the following organic solvents is commonly used as an anti-freezing fluid?

  • Methyl-etyl-ketone (MEK)
  • Acetone
  • Trichloroethylene
  • Ethylene glycol (correct)

What is the characteristic functional group of aldehydes?

  • -C=O group not in terminal position
  • -OH terminal
  • -COOH terminal
  • -C=O terminal (correct)

Which of the following is NOT a use of organic solvents?

  • Dry cleaning
  • Production of pharmaceuticals (correct)
  • Degreasing of metal surfaces
  • Extraction in the food industry

What is the characteristic of aromatic hydrocarbons?

<p>≥1 benzene rings (C)</p> Signup and view all the answers

Which of the following organic solvents can be classified as both aliphatic and halogenated?

<p>Trichloroethylene (C)</p> Signup and view all the answers

Which of the following chemicals is associated with nasopharyngeal cancer?

<p>Formaldehyde (D)</p> Signup and view all the answers

What is the primary mechanism of action of organo-phosphoric esters?

<p>Inhibiting the action of acetylcholinesterase (A)</p> Signup and view all the answers

What is the purpose of establishing an Acceptable Daily Intake (ADI) for pesticides?

<p>To establish a safety threshold for lifetime exposure to pesticides (A)</p> Signup and view all the answers

Which of the following is a potential effect of exposure to toluene and styrene?

<p>Neurosensorial ototoxicity (D)</p> Signup and view all the answers

What is the main challenge in controlling environmental exposure to pesticides in residential areas?

<p>Wind dispersal of pesticides (D)</p> Signup and view all the answers

What is the purpose of the Acute Reference Dose (ARfD) for pesticides?

<p>To establish a safe exposure limit for acute exposure to pesticides (D)</p> Signup and view all the answers

What is the primary characteristic of Amosite fibres?

<p>Harsh and spiky (C)</p> Signup and view all the answers

What is the primary use of Chrysotile in building products?

<p>Reinforcing material in asbestos cement (C)</p> Signup and view all the answers

When was the import of Amosite banned in the UK?

<p>1 January 1986 (D)</p> Signup and view all the answers

What is the primary characteristic of Crocidolite fibres?

<p>Straight and brittle (D)</p> Signup and view all the answers

What is the primary application of Chrysotile in industry?

<p>Cement industry (D)</p> Signup and view all the answers

When was the sprayed insulation product first manufactured in the USA?

<p>1931 (B)</p> Signup and view all the answers

What is the primary indicator of initial damage due to lead exposure?

<p>Urinary excretion of β-n-acetylglucosaminidase (NAG) (B)</p> Signup and view all the answers

What is the recommended exposure limit for women of reproductive age?

<p>40 μg Pb/100 mL (B)</p> Signup and view all the answers

What is the primary method of mercury extraction from cinnabar?

<p>Heating (roasting) at 600-770°C in presence of air (D)</p> Signup and view all the answers

What is the purpose of chelating agents in lead therapy?

<p>To remove lead from the body (B)</p> Signup and view all the answers

Who was the first to describe acute intoxication by calomel in 1557?

<p>Jean Fernel (A)</p> Signup and view all the answers

Why were slaves and inmates used to work in mercury mines in ancient history?

<p>Because of the danger of working in mercury mines (B)</p> Signup and view all the answers

What is the result of vasospasm in the kidneys?

<p>Block of circulation in the peritubular capillaries (A)</p> Signup and view all the answers

What is the result of percutaneous exposure to mercury?

<p>Local inflammatory reaction with purulent secretions and granuloma formation (B)</p> Signup and view all the answers

What is the effect of organic mercury on the kidneys?

<p>Release of inorganic mercury and toxic action as organic radicals (B)</p> Signup and view all the answers

What is a common symptom of mercury intoxication?

<p>Metal taste in the mouth (C)</p> Signup and view all the answers

What is a rare complication of mercury intoxication?

<p>Embolization of mercury to other organs (D)</p> Signup and view all the answers

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