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hygiene > L2 All variants > Flashcards

L2 All variants Flashcards

1
Q
  1. The water transmission path is possible for transmission:
A

a) tularemia;

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2
Q
  1. Characteristic features of water epidemics are:
A

b) chronic course;

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3
Q
  1. Prolonged water taking with a high fluoride content leads to the development of:
A

a) fluorosis;

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4
Q
  1. Flocculants are used:
A

b) for water disinfection;

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5
Q
  1. What diseases belong to the group of endemic diseases?
A

a) molybdenum gout;

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6
Q
  1. For what purposes does coagulation apply?
A

for clarification and discoloration of water.

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7
Q
  1. Piestic (intermediate) waters, in contrast to surface waters, are characterized by:
A

b) high turbidity;

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8
Q
  1. Chlorination of water with preammonization is used for water containing:
A

a) phenols;

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9
Q
  1. The most unreliable waters in the sanitary-epidemiological relation are:
A

a) surface water;

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10
Q
  1. Excessive silicon content in water can be a risk factor for development of:
A

a) endemic urolithiasis;

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11
Q
  1. Indicate which of the listed indicators is not an indicator of water organoleptic properties:
A

c) hardness.

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12
Q
  1. For disinfection of individual water resources, the follow-ing are used:
A

b) tableted preparations (pantocide, aqua-segment);

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13
Q
  1. The term “contact tail” means:
A

a) isolated cases of infection in the home after antiepidemic measures in the center;

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14
Q
  1. Development of water-nitrate methaemoglobinemia is due to:
A

c) the presence of nitrates in water.

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15
Q
  1. In decentralized water supply we don’t use:
A

a) tubular wells;

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16
Q
  1. Physical methods of water disinfection include:
A

b) ultrasound effect;

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17
Q
  1. In chlorinating with usual doses of chlorine, the residual chlorine should not exceed:
A

a) 0.3-0.5 mg/l;

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18
Q
  1. The reason for the endemic goiter development is:
A

c) iodine lack in water.

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19
Q
  1. For domestic and drinking water supply we don’t use:
A

c) surface water.

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20
Q
  1. The oligodynamic method of water disinfection is:
A

c) disinfection methods of individual water supplies.

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21
Q
  1. The risk factor for the fluorosis development is the exces-sive content in water of:
A

a) fluorides;

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22
Q
  1. Chemical (reagent) methods of water disinfection include:
A

a) boiling;

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23
Q
  1. Special methods for improving water quality include:
A

b) filtration;

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24
Q
  1. The chlorides content in drinking water should not

exceed:

A

a) 350 mg/l;

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25
Q
  1. The disadvantage of surface water supply sources is:
A

c) possibility of microbial contamination of water.

26
Q
  1. Which of the following diseases can be transmitted by

water?

A

c) typhus.

27
Q
  1. Mineralization of drinking water should be:
A

a) 5-100 mg/l;

28
Q
  1. Oligodynamic method of water disinfection (salts of silver, copper) is:
A

c) is used to disinfect individual water supplies.

29
Q
  1. Optimal indicator of total water hardness is:
A

a) 7 mEq/l;

30
Q
  1. Special methods for improving the water quality include:
A

a) chlorination;

31
Q
  1. Organoleptic indicators of water include:
A

a) sulfates content in water;

32
Q
  1. Removal of radioactive contaminants in water is carried out with the help of:
A

b) decontamination;

33
Q
  1. The difference between a centralized water supply

system and a non-centralized system is:

A

c) the absence of a pipeline system.

34
Q
  1. The risk of gout develops when there is the excessive con-tent in water of:
A

c) selenium.

35
Q
  1. The disadvantage of slow filters is:
A

a) low productivity;

36
Q
  1. Chlorination of water with preammonization is applied:
A

a) in the presence of phenols;

37
Q
  1. Prolonged use of water with a low fluoride content leads to the development of:
A

c) tooth decay.

38
Q
  1. Intermediate waters:
A

a) lie deep (more than 100 m) between two watertight layers

39
Q
  1. The sulphates content in drinking water should not

exceed:

A

a) 350 mg/l;

40
Q
  1. The following sources are not required pre-treatment and disinfection of water:
A

c) all underground sources.

41
Q
  1. For water with a pronounced smell, it is necessary to use the method of:
A

c) filtration.

42
Q
  1. With an iodine lack in water, there is a risk of develop-ment of:
A

a) endemic goiter;

43
Q
  1. Reagentless method of water disinfection is:
A

a) sonication;

44
Q
  1. Optimal fluorine concentration in water is:
A

b) 0.7 mg/l;

45
Q
  1. What kind of water is not used for organization of auton-omous household and drinking water supply?
A

c) intermediate pressure.

46
Q
  1. For disinfection of individual drinking water supplies, the following are used
A

a) tableted forms “AquaSept”, “Pantocide”;

47
Q
  1. Special methods for improving the quality of drinking wa-ter include:
A

a) chlorination with usual doses of chlorine;

48
Q
  1. Methemoglobinemia develops with the water taking with a high content in it of:
A

b) nitrates;

49
Q
  1. Flocculants are used for:
A

b) water disinfection;

50
Q
  1. The most reliable water in the sanitary-epidemiological respect are:
A

b) ground waters;

51
Q
  1. The oligodynamic method of water disinfection is:
A

b) special method for improving the quality of drinking water;

52
Q
  1. The characteristic features of water epidemics are:
A

a) chronic course;

53
Q
  1. Strontium rickets develops:
A

a) with a lack of strontium in water;

54
Q
  1. Water coagulation is used for:
A

b) clarification of water;

55
Q
  1. Requirement for slow filters is:
A

a) maturation of the active biological film;

56
Q
  1. The excess silicon content in water contributes to the de-velopment of:
A

c) endemic urolithiasis.

57
Q
  1. In decentralized water supply we use:
A

a) a distribution network;

58
Q
  1. Physical methods of water disinfection include:
A

a) ultrasound effect;

59
Q
  1. For normal chlorination, residual chlorine in water should not exceed:
A

b) 0.3-0.5 mg/l;

60
Q
  1. Which of the following diseases can be transmitted by wa-ter?2
A

c) typhus.

hygiene (3 decks)

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