COHN-S LATEST 2026 TEST PAPER QUESTIONS AND
ANSWERS GRADED A+
✔✔Cornea - ✔✔What part of the body is most immediately susceptible to UV exposure
✔✔pneumoconiosis - ✔✔Carborundum exposure may result in
✔✔a rodenticide - ✔✔Warfarin is a potent anticoagulant that is used as
✔✔human bladder carcinogen - ✔✔B-napthylamine is a known
✔✔brown lung disease caused by cotton dust - ✔✔Byssinosis
✔✔CNS - ✔✔Exposures over a long period of time to stoddard solvent,
perchloroethylene and carbon tetrachloride will damage the
✔✔Zinc oxide - ✔✔Fumes released from various welding operations have been shown
to cause flu-like symptoms, commonly called metal fume fever.
✔✔Granulomatous lesions are characteristic effects of which of the following metals -
✔✔Beryllium
✔✔How is mercury excreted - ✔✔feces
✔✔parathion - ✔✔A frequent cause of poisoning is skin absorption. Agricultural workers
are the most commonly affected group.
✔✔The result of an acute exposure to beryllium - ✔✔Chemical pneumonitis
✔✔Deposited in the bone but it exerts its toxic effect on the kidneys. - ✔✔Uranium
✔✔effects associated with exposure to methylethylketone (MEK)? - ✔✔Dermatitis and
narcosis
✔✔What are the effects of pentaborane - ✔✔Liver, kidney damage and CNS
depression
✔✔identified by OSHA as an occupational carcinogen - ✔✔Arsenic
✔✔associated with occupational asthma - ✔✔Colophony &Chromium compounds
✔✔The type of lipid which predominantly accumulates in hepatocytes in chemically-
induced liver injury is - ✔✔triglycerides
, ✔✔can cause occupationally-related liver cirrhosis? - ✔✔Carbon tetrachloride
✔✔dusts causes pulmonary fibrosis, rather than simple pneumoconiosis - ✔✔Bagasse
✔✔An infection that does not produce any obvious signs and/or symptoms is called (ex.
HIV) - ✔✔subclinical.
✔✔the probability that harm will occur - ✔✔risk
✔✔study of the adverse effecs of chemicals on bioligic systems - ✔✔toxicology
✔✔kidneys and lungs - ✔✔cadmium targets
✔✔the CNS - ✔✔mercury affects
✔✔irreversible tissue death - ✔✔corrosives cause
✔✔temporary inflammation of mm or skin - ✔✔irritants cause
✔✔cause malformations in fetus - ✔✔teratogens
✔✔can irritate skin and cause cancer - ✔✔radiation
✔✔Threshold Limit Value- workplace guidelines established by NIOSH - ✔✔TLV
✔✔Permissible Exposure Limit-standards set and enforced by OSHA - ✔✔PEL
✔✔8 hour - ✔✔Exposures assumes a(n) _______ time limit
✔✔inhalation - ✔✔most dangerous route of an exposure
✔✔10 microns - ✔✔particles smaller than ______ can reach the lower lobes of the lung
✔✔ingestion - ✔✔least common route of exposure
✔✔lethal dose (LD50) and lethal concentration (LC50) needed to kill the half life of the
experimental animals - ✔✔Two terms that describe the toxicity of a substance
✔✔immediate dangerous to life or health - ✔✔IDLH
✔✔the restult is greater than than the sum effect fo the two substances if the exposures
were separate - ✔✔synergistic effect
ANSWERS GRADED A+
✔✔Cornea - ✔✔What part of the body is most immediately susceptible to UV exposure
✔✔pneumoconiosis - ✔✔Carborundum exposure may result in
✔✔a rodenticide - ✔✔Warfarin is a potent anticoagulant that is used as
✔✔human bladder carcinogen - ✔✔B-napthylamine is a known
✔✔brown lung disease caused by cotton dust - ✔✔Byssinosis
✔✔CNS - ✔✔Exposures over a long period of time to stoddard solvent,
perchloroethylene and carbon tetrachloride will damage the
✔✔Zinc oxide - ✔✔Fumes released from various welding operations have been shown
to cause flu-like symptoms, commonly called metal fume fever.
✔✔Granulomatous lesions are characteristic effects of which of the following metals -
✔✔Beryllium
✔✔How is mercury excreted - ✔✔feces
✔✔parathion - ✔✔A frequent cause of poisoning is skin absorption. Agricultural workers
are the most commonly affected group.
✔✔The result of an acute exposure to beryllium - ✔✔Chemical pneumonitis
✔✔Deposited in the bone but it exerts its toxic effect on the kidneys. - ✔✔Uranium
✔✔effects associated with exposure to methylethylketone (MEK)? - ✔✔Dermatitis and
narcosis
✔✔What are the effects of pentaborane - ✔✔Liver, kidney damage and CNS
depression
✔✔identified by OSHA as an occupational carcinogen - ✔✔Arsenic
✔✔associated with occupational asthma - ✔✔Colophony &Chromium compounds
✔✔The type of lipid which predominantly accumulates in hepatocytes in chemically-
induced liver injury is - ✔✔triglycerides
, ✔✔can cause occupationally-related liver cirrhosis? - ✔✔Carbon tetrachloride
✔✔dusts causes pulmonary fibrosis, rather than simple pneumoconiosis - ✔✔Bagasse
✔✔An infection that does not produce any obvious signs and/or symptoms is called (ex.
HIV) - ✔✔subclinical.
✔✔the probability that harm will occur - ✔✔risk
✔✔study of the adverse effecs of chemicals on bioligic systems - ✔✔toxicology
✔✔kidneys and lungs - ✔✔cadmium targets
✔✔the CNS - ✔✔mercury affects
✔✔irreversible tissue death - ✔✔corrosives cause
✔✔temporary inflammation of mm or skin - ✔✔irritants cause
✔✔cause malformations in fetus - ✔✔teratogens
✔✔can irritate skin and cause cancer - ✔✔radiation
✔✔Threshold Limit Value- workplace guidelines established by NIOSH - ✔✔TLV
✔✔Permissible Exposure Limit-standards set and enforced by OSHA - ✔✔PEL
✔✔8 hour - ✔✔Exposures assumes a(n) _______ time limit
✔✔inhalation - ✔✔most dangerous route of an exposure
✔✔10 microns - ✔✔particles smaller than ______ can reach the lower lobes of the lung
✔✔ingestion - ✔✔least common route of exposure
✔✔lethal dose (LD50) and lethal concentration (LC50) needed to kill the half life of the
experimental animals - ✔✔Two terms that describe the toxicity of a substance
✔✔immediate dangerous to life or health - ✔✔IDLH
✔✔the restult is greater than than the sum effect fo the two substances if the exposures
were separate - ✔✔synergistic effect
