Community medicine 2020. 6-semester

Air Hygiene

1. What kind of humidity can be measured by a psychrometer?

1. 
   Absolute humidity
   
2. 
   Relative humidity
   
3. 
   Maximum humidity
   
4. 
   All types of humidity
   

2. What devices are needed to measure low air velocity?

1. 
   Catheter
   
2. 
   Catatermometer
   
3. 
   Hygrometer
   
4. 
   Anemometer
   

3. What is Climate?

1. 
   Aggregate of meteorological phenomena
   
2. 
   Regular sequence of meteorological processes
   
3. 
   Regular yearly weather patterns
   
4. 
   Long-term weather regime
   

4. What physical parameters of air do you know?

1. 
   Air velocity
   
2. 
   pH
   
3. 
   Methane
   
4. 
   Ozone
   

5. What parameters does the microclimate include?

1. 
   Air humidity
   
2. 
   Weather
   
3. 
   Air
   
4. 
   Water
   

6. The optimum relative humidity in buildings is ranged between:

1. 
   30-40%
   
2. 
   30-60%
   
3. 
   50-60%
   
4. 
   60-70% 
   

7. With increase in altitude, atmospheric pressure:

1. 
   Increases
   
2. 
   Decreases
   
3. 
   Remains unchanged
   
4. 
   Starts fluctuating
   

8. In what combination of microclimatic parameters the human body will become too cold?

1. 
   high temperature and high atmospheric pressure
   
2. 
   high humidity and high atmospheric pressure
   
3. 
   low temperature and low humidity
   
4. 
   low temperature and high humidity
   

9. In what combination of microclimatic parameters the human body will become too cold?

1. 
   high humidity and high atmospheric pressure
   
2. 
   low temperature and low humidity
   
3. 
   low temperature and high air speed
   
4. 
   low temperature and low atmospheric pressure
   

10. The study of the microclimate of the classroom revealed that air temperature was 24 °C, horizontal temperature gradient - 2.0°C, vertical gradient - 2.5°C, relative humidity - 72%, air velocity - 0.1 m/sec. What microclimate parameters of the classroom does not meet hygiene standards?

1. 
   air temperature and air speed
   
2. 
   air temperature and relative humidity
   
3. 
   horizontal gradient of air temperature and relative humidity
   
4. 
   vertical temperature gradient and air velocity
   

11. The mean air temperature in the ward of the adult somatic department is 22 C. Air temperature gradient in vertical - 4 C and horizontal gradient of air temperature is 2 C. Relative humidity is 40% and air velocity - 0,01 m/s. What microclimate parameters in the hospital room does not meet hygiene requirements?

1. 
   meanairtemperature
   
2. 
   vertical gradient of the air temperature
   
3. 
   horizontal gradient of the air temperature
   
4. 
   relativehumidity
   

12. Climatic conditions in South India are such when a high temperature is very often combined with high air velocity. How does the increased speed of air movement on the human body at the air temperature above + 35°C?

1. 
   it is favorable as a result of amplification of sweating
   
2. 
   it contributes to the release of excess heat by convection
   
3. 
   it contributes to overheating due to the termination of heat release by convection
   
4. 
   it enhances heat transfer by conduction
   

13. The study of the microclimate of the classroom revealed that air temperature was 20 °C, horizontal temperature gradient - 4.0°C, vertical gradient - 2.5°C, relative humidity - 74%, air velocity - 0.1 m/sec. What microclimate parameters of the classroom does not meet hygiene standards?

1. 
   air temperature and air speed
   
2. 
   air temperature and relative humidity
   
3. 
   horizontal gradient of air temperature and relative humidity
   
4. 
   vertical temperature gradient and air velocity
   

14. In a classroom, the air volume is regulated per 1 student. What is the minimum volume of space per person with a single exchange of air per hour in ordinary dwellings?

1. 
   air cube
   
2. 
   physiologicalvolume
   
3. 
   ventilationvolume
   
4. 
   functionalcube
   

15. Please, indicate the standards of microclimate in living quarters

1. 
   temperature 16-18^oС, relative humidity 30-40%, air velocity 0,5-1 m/s
   
2. 
   temperature 23-25^oС, air velocity 0.05-0.1 m/s, concentration of carbon dioxide 3%
   
3. 
   temperature 18-20^oС, relative humidity 40-60%, air velocity 0.2-0.4 m/s
   
4. 
   concentration of carbon dioxide 1%, bacterial contamination of 5000 microorganisms in 1m³, temperature 22-24^oC, relative humidity 50-70%, air velocity 0.1-0.3 m/s
   

16. What is optimum temperature in living premises in temperate climate areas?

1. 
   16-18^oC
   
2. 
   18-20^oC
   
3. 
   20-22^oC
   
4. 
   22-24^oC
   

17. Increased room air temperature adversely affects:

1. 
   Central nervous system
   
2. 
   thermoregulation system
   
3. 
   joints mobility
   
4. 
   musculoskeletal system
   

18. Increased room air temperature adversely affects:

1. 
   the digestive system
   
2. 
   hearing and vision
   
3. 
   reproductive system
   
4. 
   musculoskeletal system
   

19. Increased room air temperature adversely affects:

1. 
   joints mobility
   
2. 
   hearing and vision
   
3. 
   cardiovascular system
   
4. 
   musculoskeletal system
   

20. Increased room air temperature adversely affects:

1. 
   musculoskeletal system
   
2. 
   joints mobility
   
3. 
   hearing and vision
   
4. 
   water-salt exchange
   

21. Low air temperature adversely affects:

1. 
   *peripheral nervous system (in the form of neuritis, myositis)
   
2. 
   thermoregulation, reducing heat dissipation
   

1. 
   joints mobility
   
2. 
   hearing and vision
   

22. Low air temperature adversely affects:

1. 
   thermoregulation, reducing heat dissipation
   
2. 
   joints mobility
   
3. 
   hearing and vision
   
4. 
   the immune system
   

23. What does influence on comfort temperature value in a room is affected by:

1. 
   latitude
   
2. 
   climatic zone
   
3. 
   oxygen level in the air
   
4. 
   the degree of body hardening
   

24. Normative values of air temperature in the room depend on the climatic zone because:

1. 
   humans belong to homoiothermic biological species
   
2. 
   there are different altitudes above sea level
   
3. 
   relative air humidity affects heat exchange
   
4. 
   radiative heat losses prevail others
   

25. The thermal comfort of a person in a room depends on:

1. 
   nature of the work
   
2. 
   light level
   
3. 
   the degree of body hardening
   
4. 
   oxygen level in the air
   

26. The thermal comfort of a person in a room depends on:

1. 
   oxygen level in the air
   
2. 
   light level
   
3. 
   the degree of body hardening
   
4. 
   efficiency of heating
   

27. What way of heat exchange is predominant in humans in conditions of thermal comfort?

1. 
   conduction
   
2. 
   convection
   
3. 
   radiation
   
4. 
   perspiration
   

28. Select correct measure of prevention of a body overheat:

1. 
   increasing fat in a diet
   
2. 
   increasing protein in a diet
   
3. 
   rational mode of work and rest
   
4. 
   excessive muscular activity
   

29. The indicator of relative humidity has physiological significance, but not absolute humidity, because:

1. 
   relative humidity affects heat exchange, and absolute one does not
   
2. 
   absolute humidity is not an objective indicator
   
3. 
   relative humidity shows the percentage of air saturation with water vapor
   
4. 
   barometric pressure does not affect the absolute, but changes the relative humidity
   

30. Microclimate conditions under which the body is overcooled more quickly:

1. 
   high humidity and low temperature
   
2. 
   high humidity and high temperature
   
3. 
   low humidity and high temperature
   
4. 
   low temperature and low humidity