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Hygiene and Ecology Test 1- 3rd Year- Sem 1- PMU

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Hygiene and Ecology Test 1- 3rd Year- Sem 1- PMU
Med Student
Quiz by Med Student , updated more than 1 year ago
Med Student
Created by Med Student over 6 years ago
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Question 1

Question
Hygiene is one of the main objects of the preventive medicine
Answer
  • True
  • False

Question 2

Question
What is a hygienic norm?
Answer
  • a law document about the quality indices of environmental factors
  • the maximal or minimal physiologically safe levels of environmental factors

Question 3

Question
The main branches of hygiene are:
Answer
  • childhood and adolescent hygiene
  • occupational medicine
  • epidemiology
  • hygiene of nutrition

Question 4

Question
The specific methods of hygiene are:
Answer
  • sanitary description
  • sanitary investigation
  • biochemical method
  • complex hygienic method

Question 5

Question
Which are the types of health control?
Answer
  • current
  • preliminary
  • preliminary and current

Question 6

Question
The monitoring of drinking water is
Answer
  • periodical
  • permanent
  • periodical and permanent

Question 7

Question
The permanent manicuring of drinking water includes:
Answer
  • organoleptic analysis
  • physical and chemical indices
  • epidemiological indices
  • microbiological indices

Question 8

Question
The hardness of water depends on the content of:
Answer
  • calcium and magnesium
  • iron and manganese

Question 9

Question
The hardness of water is expressed by mini-equivalent per liter (meqV/l)
Answer
  • True
  • False

Question 10

Question
The organoleptic indices of drinking water are:
Answer
  • color, taste, hardness, colony counts
  • color, taste, odor, turbidity
  • color, taste, odor, hardness

Question 11

Question
Indicate the laboratory analysis for the drinking water quality according to Instruction No. 9 / 2001 year:
Answer
  • organoleptic indices
  • microbiological indices
  • epidemiological indices
  • physical and chemical indices
  • radiological indices

Question 12

Question
Water odor should be no more than 2 bales at temperature of 20°C
Answer
  • True
  • False

Question 13

Question
Which is the hygienic norm for the nitrate content in drinking water?
Answer
  • 50 mg/l
  • 100 mg/l
  • 0.5 mg/l

Question 14

Question
Nitrites are indicators for recent organic pollution of water
Answer
  • True
  • False

Question 15

Question
Which elements and compounds have influence on the organoleptic indices of drinking water?
Answer
  • ammonia and nitrite
  • chlorides and sulfate
  • iron
  • calcium and magnesium
  • nitrate

Question 16

Question
What is oxidation?
Answer
  • This is the oxygen in 1 liter water
  • This is the oxygen, necessary for the oxidation of organic substances in 1 liter water
  • This is the organic matter in 1 liter water

Question 17

Question
The water pH determination may be measured with:
Answer
  • pH-meter
  • pH-indicator paper
  • Merck-colorimetric pH test

Question 18

Question
Which is the hygienic norm of the residual chlorine in drinking water?
Answer
  • 0.3-0.4 mg/l
  • 1.0-3.0 mg/l
  • 0.05-0.08 mg/l

Question 19

Question
Which physical methods are used for disinfection of drinking water?
Answer
  • boiling
  • ultraviolet radiation
  • infrared radiation

Question 20

Question
The residual chlorine in drinking water is:
Answer
  • free residual chlorine
  • combined residual chlorine
  • free and combined residual chlorine

Question 21

Question
The maximum permissible level of chlorides in drinking water is 250 mg/l
Answer
  • True
  • False

Question 22

Question
Which elements and compounds have influence on the organoleptic indices of drinking water?
Answer
  • ammonia and nitrite
  • chlorides and sulfate
  • iron
  • calcium and magnesium
  • nitrate

Question 23

Question
Microbiological indices of drinking water are:
Answer
  • Coliforms
  • Enterococcus
  • Staphylococcus aureus

Question 24

Question
Is the coliform permissible in 100 ml of drinking water?
Answer
  • True
  • False

Question 25

Question
The concentration of carbon dioxide (CO2) in closed gems is used for:
Answer
  • assessment of the air quality
  • efficacy of the ventilation system
  • index of the thermal comfort

Question 26

Question
The concentration of CO2 near to 8-10 vol. % causes death
Answer
  • True
  • False

Question 27

Question
The content of nitrogen in the atmospheric air is:
Answer
  • about 78 vol.%
  • about 69 vol.%
  • about 85 vol.%

Question 28

Question
The main sources of air pollution are:
Answer
  • industries
  • domestic sources
  • transport
  • agriculture

Question 29

Question
The natural pollutants of the atmospheric air are:
Answer
  • volcanic activity
  • ocean sands
  • smoke and dust
  • desert sands

Question 30

Question
The types of air pollution limits in Bulgaria are
Answer
  • daily permissible concentration
  • season permissible concentration
  • hour permissible concentration
  • annual permissible concentration

Question 31

Question
Gaseous pollutants are removed from ambient air for analysis by use of:
Answer
  • absorption
  • titration of the sample
  • grab sampling

Question 32

Question
Which are the air pollutants?
Answer
  • oxygen
  • nitrogen dioxide
  • dust
  • carbon monoxide

Question 33

Question
Dust is classified as:
Answer
  • inert
  • toxic
  • allergenic
  • fibrogenic

Question 34

Question
Methods for dust analysis are:
Answer
  • comparison
  • filtration
  • impingement

Question 35

Question
The microclimate includes the following physical factors:
Answer
  • temperature, humidity, air velocity, infrared radiation
  • temperature, humidity, atmospheric pressure, ultraviolet radiation

Question 36

Question
The instrument used for measuring atmospheric pressure is:
Answer
  • thermometer
  • barometer
  • pH-meter

Question 37

Question
”Wind rose" is:
Answer
  • a flower-like diagram indicating the relative frequencies of different wind direction for given station and period of time
  • a dynamic complex of meteorological factors in respect to given place for short period of time

Question 38

Question
Absolute humidity is the weight of water vapor in a unit volume of air. It is expressed in g/m3 or Pa
Answer
  • True
  • False

Question 39

Question
Barometric pressure varies with:
Answer
  • temperature
  • air pollutants
  • weather

Question 40

Question
The basic methods for measuring the humidity are.
Answer
  • hydrometry (direct method)
  • psychrometry (indirect method)

Question 41

Question
Kata thermometer is:
Answer
  • a mercury thermometer
  • an alcohol thermometer
  • a glob thermometer

Question 42

Question
Infrared radiation occupies the region in the electromagnetic spectrum between microwaves and visible light
Answer
  • True
  • False

Question 43

Question
The scale of Bedford for determination of subjective thermal sensation is:
Answer
  • 7 bale - very hot, hot, warm. comfort, less cool, cool, cold
  • 5 bale - hot, warm, comfort, cool, cold

Question 44

Question
Which is the hygienic norm of the air temperature in an living rooms?
Answer
  • 20 - 22°C
  • 15 - 16°C
  • 28 - 30°C

Question 45

Question
Which is the hygienic norm of the air velocity in the living rooms?
Answer
  • 0.5 - 1 m/s
  • 1 - 2 m/s
  • 0.2 - 0.4 m/s

Question 46

Question
Which is the hygienic norm of humidity in the living rooms?
Answer
  • 10 - 20%
  • 40 - 60%
  • 80 - 100%

Question 47

Question
For efficient vision, the following light factors are essential:
Answer
  • sufficiency, distribution, absence of glare, absence of slurp shadows, steadiness, color of light
  • sufficiency, distribution, the wind, color of light, temperature

Question 48

Question
Types of ventilation are
Answer
  • natural ventilation
  • mechanical ventilation

Question 49

Question
Artificial ventilation may be of the following types:
Answer
  • exhaust ventilation
  • plenum ventilation
  • the wind
  • balanced ventilation
  • air conditioning

Question 50

Question
The air velocity, the wind direction, the air temperature and the humidity are meteorological factors, which determine the microclimate in appointed area.
Answer
  • True
  • False
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