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Quiz von Med Student , aktualisiert more than 1 year ago
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Erstellt von Med Student
vor mehr als 6 Jahre
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Frage 1
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Hygiene is one of the main objects of the preventive medicine
Antworten
- True
- False
Frage 2
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What is a hygienic norm?
Antworten
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a law document about the quality indices of environmental factors
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the maximal or minimal physiologically safe levels of environmental factors
Frage 3
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The main branches of hygiene are:
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childhood and adolescent hygiene
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occupational medicine
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epidemiology
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hygiene of nutrition
Frage 4
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The specific methods of hygiene are:
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sanitary description
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sanitary investigation
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biochemical method
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complex hygienic method
Frage 5
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Which are the types of health control?
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current
-
preliminary
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preliminary and current
Frage 6
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The monitoring of drinking water is
Antworten
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periodical
-
permanent
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periodical and permanent
Frage 7
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The permanent manicuring of drinking water includes:
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organoleptic analysis
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physical and chemical indices
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epidemiological indices
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microbiological indices
Frage 8
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The hardness of water depends on the content of:
Antworten
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calcium and magnesium
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iron and manganese
Frage 9
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The hardness of water is expressed by mini-equivalent per liter (meqV/l)
Antworten
- True
- False
Frage 10
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The organoleptic indices of drinking water are:
Antworten
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color, taste, hardness, colony counts
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color, taste, odor, turbidity
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color, taste, odor, hardness
Frage 11
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Indicate the laboratory analysis for the drinking water quality according to Instruction No. 9 / 2001 year:
Antworten
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organoleptic indices
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microbiological indices
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epidemiological indices
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physical and chemical indices
-
radiological indices
Frage 12
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Water odor should be no more than 2 bales at temperature of 20°C
Antworten
- True
- False
Frage 13
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Which is the hygienic norm for the nitrate content in drinking water?
Antworten
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50 mg/l
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100 mg/l
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0.5 mg/l
Frage 14
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Nitrites are indicators for recent organic pollution of water
Antworten
- True
- False
Frage 15
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Which elements and compounds have influence on the organoleptic indices of drinking water?
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ammonia and nitrite
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chlorides and sulfate
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iron
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calcium and magnesium
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nitrate
Frage 16
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What is oxidation?
Antworten
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This is the oxygen in 1 liter water
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This is the oxygen, necessary for the oxidation of organic substances in 1 liter water
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This is the organic matter in 1 liter water
Frage 17
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The water pH determination may be measured with:
Antworten
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pH-meter
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pH-indicator paper
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Merck-colorimetric pH test
Frage 18
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Which is the hygienic norm of the residual chlorine in drinking water?
Antworten
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0.3-0.4 mg/l
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1.0-3.0 mg/l
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0.05-0.08 mg/l
Frage 19
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Which physical methods are used for disinfection of drinking water?
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boiling
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ultraviolet radiation
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infrared radiation
Frage 20
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The residual chlorine in drinking water is:
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free residual chlorine
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combined residual chlorine
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free and combined residual chlorine
Frage 21
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The maximum permissible level of chlorides in drinking water is 250 mg/l
Antworten
- True
- False
Frage 22
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Which elements and compounds have influence on the organoleptic indices of drinking water?
Antworten
-
ammonia and nitrite
-
chlorides and sulfate
-
iron
-
calcium and magnesium
-
nitrate
Frage 23
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Microbiological indices of drinking water are:
Antworten
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Coliforms
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Enterococcus
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Staphylococcus aureus
Frage 24
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Is the coliform permissible in 100 ml of drinking water?
Antworten
- True
- False
Frage 25
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The concentration of carbon dioxide (CO2) in closed gems is used for:
Antworten
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assessment of the air quality
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efficacy of the ventilation system
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index of the thermal comfort
Frage 26
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The concentration of CO2 near to 8-10 vol. % causes death
Antworten
- True
- False
Frage 27
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The content of nitrogen in the atmospheric air is:
Antworten
-
about 78 vol.%
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about 69 vol.%
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about 85 vol.%
Frage 28
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The main sources of air pollution are:
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industries
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domestic sources
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transport
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agriculture
Frage 29
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The natural pollutants of the atmospheric air are:
Antworten
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volcanic activity
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ocean sands
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smoke and dust
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desert sands
Frage 30
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The types of air pollution limits in Bulgaria are
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daily permissible concentration
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season permissible concentration
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hour permissible concentration
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annual permissible concentration
Frage 31
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Gaseous pollutants are removed from ambient air for analysis by use of:
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absorption
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titration of the sample
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grab sampling
Frage 32
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Which are the air pollutants?
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-
oxygen
-
nitrogen dioxide
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dust
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carbon monoxide
Frage 33
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Dust is classified as:
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inert
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toxic
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allergenic
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fibrogenic
Frage 34
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Methods for dust analysis are:
Antworten
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comparison
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filtration
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impingement
Frage 35
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The microclimate includes the following physical factors:
Antworten
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temperature, humidity, air velocity, infrared radiation
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temperature, humidity, atmospheric pressure, ultraviolet radiation
Frage 36
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The instrument used for measuring atmospheric pressure is:
Antworten
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thermometer
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barometer
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pH-meter
Frage 37
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”Wind rose" is:
Antworten
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a flower-like diagram indicating the relative frequencies of different wind direction for given station and period of time
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a dynamic complex of meteorological factors in respect to given place for short period of time
Frage 38
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Absolute humidity is the weight of water vapor in a unit volume of air. It is expressed in g/m3 or Pa
Antworten
- True
- False
Frage 39
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Barometric pressure varies with:
Antworten
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temperature
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air pollutants
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weather
Frage 40
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The basic methods for measuring the humidity are.
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hydrometry (direct method)
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psychrometry (indirect method)
Frage 41
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Kata thermometer is:
Antworten
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a mercury thermometer
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an alcohol thermometer
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a glob thermometer
Frage 42
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Infrared radiation occupies the region in the electromagnetic spectrum between microwaves and visible light
Antworten
- True
- False
Frage 43
Frage
The scale of Bedford for determination of subjective thermal sensation is:
Antworten
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7 bale - very hot, hot, warm. comfort, less cool, cool, cold
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5 bale - hot, warm, comfort, cool, cold
Frage 44
Frage
Which is the hygienic norm of the air temperature in an living rooms?
Antworten
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20 - 22°C
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15 - 16°C
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28 - 30°C
Frage 45
Frage
Which is the hygienic norm of the air velocity in the living rooms?
Antworten
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0.5 - 1 m/s
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1 - 2 m/s
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0.2 - 0.4 m/s
Frage 46
Frage
Which is the hygienic norm of humidity in the living rooms?
Antworten
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10 - 20%
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40 - 60%
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80 - 100%
Frage 47
Frage
For efficient vision, the following light factors are essential:
Antworten
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sufficiency, distribution, absence of glare, absence of slurp shadows, steadiness, color of light
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sufficiency, distribution, the wind, color of light, temperature
Frage 48
Frage
Types of ventilation are
Antworten
-
natural ventilation
-
mechanical ventilation
Frage 49
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Artificial ventilation may be of the following types:
Antworten
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exhaust ventilation
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plenum ventilation
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the wind
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balanced ventilation
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air conditioning
Frage 50
Frage
The air velocity, the wind direction, the air temperature and the humidity are meteorological factors, which determine the microclimate in appointed area.
Antworten
- True
- False
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