Hygiene MCQs

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cold weather extremes appear to have a more substantial impact on mortality than hot wave episodes

  • A. True
  • B. False
  • Correct Answer: Option B

the soil stratum from 0 to 30 cm is of great importance to hygiene

  • A. True
  • B. False
  • Correct Answer: Option A

the main aim of the special hygienic requirements for infectious diseases hospital is the prevention of nosocomial infections

  • A. True
  • B. False
  • Correct Answer: Option A

methods for water disinfection are of three types: physical, chemical and biological

  • A. True
  • B. False
  • Correct Answer: Option B

the bactericidal effect of chlorine is due to the free chlorine-ions, which interact with the substances in the water and neutralize the bacteria

  • A. True
  • B. False
  • Correct Answer: Option B

relative humidity is measured by actinometry

  • A. True
  • B. False
  • Correct Answer: Option B

oxygen is the main component of the ambient air

  • A. True
  • B. False
  • Correct Answer: Option B

the permissible value of CO2 in a work or residential building is up to 0.1 vol %

  • A. True
  • B. False
  • Correct Answer: Option A

ozone is normally found in large quantities in the troposphere

  • A. true
  • B. false
  • Correct Answer: Option B

the transfer of infection by the airborne route can be controlled only

  • A. by confining the patients in a single room
  • B. on barrier nursing
  • C. all of the above
  • D. none of the above
  • Correct Answer: Option A