IICRC Written Test Questions and Answers: Guaranteed Pass, Exams of Nursing

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IICRC WRITTEN TEST

QUESTIONS WITH 100%

CORRECTLY SOLVED ANSWERS

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A+ GRADED

1. During the inspection process, restorers shall make a reasonable effort to ANSWER ✔✔ C. identify and address potential safety hazards
2. A significant amount of water absorption and evaporation load where wet porous materials represent ~5% to ~40% of combined ceiling, walls, and flooring surface areas and where low evaporation materials and assemblies are minimally wet is ANSWER ✔✔ B. class 2
3. Multiple extraction of salvageable materials, especially porous material (e.g. Carpet , cushion) often are required to: ANSWER ✔✔ decrease drying time
4. To enhance drying, restorers should manage both ambient temperature and ANSWER ✔✔ surface temperatures of affected materials

5. Water damage restoration services should not begin until after the: ANSWER ✔✔ restorer has entered into an adequately written contract.
6. Two tools that should be used to properly disengage most stretched-in carpet ANSWER ✔✔ Knee kicker and carpet awl
7. When inspecting a water damage structure, restorers should inspect: ANSWER ✔✔ all potentially affected areas.
8. Buckled or damaged particle board should ANSWER ✔✔ removed and replaced with new material.
9. upon entering a building, professional moisture detection equipment should be used to evaluate and document: ANSWER ✔✔ applicable psychrometric conditions and moisture content or level readings.
10. When wet, a structural material that loses most of its structural integrity, but regains its strength when dry, is: ANSWER ✔✔ Concrete
11. Initially, a method of search for abnormal moisture behind ceramic tile or resilient flooring can be accomplished by

ANSWER ✔✔ using a non-penetrating (non-invasive) moisture meter

12. To minimize damage and reduce drying time, reduce drying time, restorers should: ANSWER ✔✔ begin mitigation as soon as safely possible
13. The moisture content of structural materials should be measured with a ANSWER ✔✔ A. moisture meter
14. When accessible from below, to dry wet wood subflooring under stone or tile flooring, restorers can use low-humidity air and ANSWER ✔✔ D. vapor barrier
15. Biocides designed to destroy or eliminate all forms of microbial life and their spores are ANSWER ✔✔ D. sterilizers
16. When carpet is wet it can be delaminated by ANSWER ✔✔ D. improper handling and disengaging
17. To minimize or control aerosolized soils or contaminants during restoration, restorers can: ANSWER ✔✔ B. install one or more air filtration devices (AFDs)

18. When pre-existing damage is discovered, restorer should ANSWER ✔✔ D. document and bring it to the attention of materially interested parties
19. Rapid drying of structural materials is achieved by: ANSWER ✔✔ promoting evaporation and dehumidification or ventilation
20. When carpet and cushion (pad, underlay) are saturated with Category 3 water ANSWER ✔✔ Both should be removed for proper disposal
21. To minimize safety concerns and to speed structural drying, gypsum board (drywall) ceilings that are saturated and sagging should be ANSWER ✔✔ A. drained, removed quickly, and properly disposed
22. The force exerted by water molecules in the air on surrounding surfaces is ANSWER ✔✔ b. Vapor Pressure (page 11)
23. Generally, fastest rate of evaporation from wet materials with a 70F (21C) surface temperature [0.67 VP] would be an environment with ANSWER ✔✔ A. 60F (4C) and 80% RH

24. Two hazardous materials more likely found in older building that require compliance with laws and regulations when handled are ANSWER ✔✔ C. lead-based paint and asbestos
25. As humidity ratio increases (or decreases) another psychrometric chart property that also increases (or decreases) is ANSWER ✔✔ C. vapor pressure
26. Ventilating a structure during the initial stages of restoration can be effective way to enhance drying by reducing the build up of ANSWER ✔✔ C. humidity
27. When using government-registered biocide, restorers shall ANSWER ✔✔ C. apply according to label directions
28. Intentionally using outdoor air to reduce indoor humidity is known as ANSWER ✔✔ B. an open drying system
29. To confirm that proper drying conditions were established and also that drying goals were met, restorers should maintain written logs to include: ANSWER ✔✔ B. an atmospheric humidity record and materials moisture content record

30. A closed drying system is recommended during restoration when ANSWER ✔✔ A. outdoor humidity ratio is higher than indoor humidity ratio
31. the rating for water removal of refrigerant dehumidification normally is expressed in pints of water removed in 24 hours at standard AHAM test conditions of ANSWER ✔✔ C. 80 F (27C) and 60% RH
32. The temperature at which air reaches 100% relative humidity is known as the ANSWER ✔✔ C. dew point temperature
33. Water-saturated carpet cushion (pad, underlay) should be removed and disposed if ANSWER ✔✔ A. saturated with Category 2 or 3 water
34. If vapor pressure in ambient air is lower than the vapor pressure in wet materials, the most likely outcome will be ANSWER ✔✔ A. condensation
35. Generally, refrigerant dehumidifiers are most efficient in the temperature range of ANSWER ✔✔ 70F to 90F (21C to 32C)
36. When performing water-damage restoration services and mold growth is discovered, initially restorers should

ANSWER ✔✔ use appropriate PPE, containment or other engineering controls

37. Water that originates from a sanitary water source and does not pose a substantial risk from exposure is ANSWER ✔✔ A. category 1
38. Before applying biocides in water-damaged structures, restorers should ANSWER ✔✔ D. turn on the HVAC system to help spread biocides evenly
39. One of the primary purposes of the initial extraction is to ANSWER ✔✔ D. contain migrating water
40. On a structural drying project, if indoor conditions are 88 F (31 C) and 60% RH, condensation begins to occur on structural materials with a surface temperature cooler than ANSWER ✔✔ A) 72 F (22 C)
41. The ratio of the mass of water vapor to the mass of dry air in a given moist air sample usually expressed in grams per pound (grams per kilogram) of dry air is the ANSWER ✔✔ C. Saturation factor
42. To effectively dry wood sub flooring below sheet vinyl flooring, restorers might need to ANSWER ✔✔ B. remove and discard the vinyl covering

43. Water vapor pressure always seeks ANSWER ✔✔ D. equilibrium
44. At a humidity ratio of 45 gpp (6.4 g/kg) and a temperature of 60 F (16 C), the relative humidity is ANSWER ✔✔ B. 36%
45. After finished wood flooring has been dried to acceptable moisture content ANSWER ✔✔ appropriate acclimation time may be required before refinishing
46. When carpet has been affected by sewage and should be removed and any materially interested party disagrees, restorers can choose to ANSWER ✔✔ clean and save the carpet if possible
47. As the air temperature increases, relative humidity ANSWER ✔✔ B. decreases
48. Changing a solid directly into a vapor without going through a liquid phase is known as ANSWER ✔✔ B) sublimation
49. According to ANSI/IIRC S500, an IEP is an ANSWER ✔✔ A) indoor environment professional

50. The greatest amount of water absorption and evaporation load where wet porous materials represent more than ~40% of combined ceiling, walls, and flooring surface areas and where low evaporation materials and assemblies are minimally ANSWER ✔✔ D. class 4
51. The number of gallons (liters) present in standing water that is 4-foot-9-inch in depth occupying a 20 foot by 25 foot(6.1 m x 7.6m) basement is ANSWER ✔✔ C. 17765 (67240)
52. The surface temperature of a material on which water will condense when contacted by air at 95 F (35 C) and 50% RH is ANSWER ✔✔ A) 73 F (23 C)
53. Waste water shall be disposed of ANSWER ✔✔ D) in accordance with applicable laws and regulations
54. An initial attempt to determine the perimeter of wet carpet and cushion (pad, underlay) can be quickly and most easily estimated by ANSWER ✔✔ using a moisture sensor or thermal imaging camera
55. When cellulosic insulation becomes wet

ANSWER ✔✔ it should be removed and structure materials dried

56. Water intrusion where a significant amount of water is trapped or bound within low evaporation building materials or assemblies, may require longer drying time is defined as ANSWER ✔✔ D) class 4
57. Materials continue to absorb and desorb water vapor until they have reached ANSWER ✔✔ D) equilibrium with the environment
58. Drying equipment should remain in operation on site until ANSWER ✔✔ D. affected materials meet predetermined drying goals
59. The potential ease of water vapor to pass through a material is ANSWER ✔✔ b. permeability (had different answer but this makes more sense)
60. For safety, air movers shall be equipped with ANSWER ✔✔ C. a grounded electrical plug
61. The drying goal for solid hardwood flooring is within ANSWER ✔✔ A. 2-4 percentage points of the dry standard

62. Generally, the drying system that creates the lowest atmospheric vapor pressure is ANSWER ✔✔ D. desiccant dehumidification
63. Applying thermal energy directly to wet materials can be used to accelerate evaporation by increasing the temperature and the waters ANSWER ✔✔ D. Vapor pressure
64. The atmospheric conditions with the lowest humidity ratio is ANSWER ✔✔ A. 40 F AND 80% RH
65. Blowing dry air into wall cavities helps dry them primarily by ANSWER ✔✔ D. increasing the rate of evaporation
66. The atmospheric condition equivalent to a humidity ratio of 54 gpp (7.8 g/kg) is ANSWER ✔✔ 90 F and 37% RH
67. When air is holding the maximum amount of water vapor possible at the existing temperature and pressure the air is ANSWER ✔✔ D) saturated

68. Water that contains significant contamination and has the potential to cause discomfort or sickness if contacted or consumed by humans is ANSWER ✔✔ B) category 2
69. Of the sub flooring materials listed below, the one most resistant to water damage is ANSWER ✔✔ A) plywood
70. After removing bulk water, if required, concrete should be dried using a combination of controlled dry air movement and atmospheric temperature or ANSWER ✔✔ A) heat energy transfer
71. When category 2 water enters a building the contaminated material that should be disposed is ANSWER ✔✔ D) carpet cushion (pad, underlay)
72. The primary purpose of the "skin" on most carpet cushion (pad, underlay) is to ANSWER ✔✔ C. Ease carpet stretching during installation
73. When moisture causes wood flooring to expand (swell) with edges higher than the centers the planks are ANSWER ✔✔ D) cupped

74. When placing air movers in a building that had water intrusion, the formula begins with each room receiving this many air movers prior to affected area and inset/offset calculations ANSWER ✔✔ A) 1
75. When significant Carpet Delamination is discovered the restorer should ANSWER ✔✔ D) document, communicate with materially interested parties, and most often recommend replacement
76. When the temperature of absorbed moisture in materials is increased, more energy is increased causing the ANSWER ✔✔ C. Evaporation to increase
77. Reducing the water vapor content of air is ANSWER ✔✔ A) dehumidification
78. When indoor conditions are 75 F (24 C) and 55% RH and no heating system is available the most appropriate outdoor conditions for considering an open drying system would be ANSWER ✔✔ c
79. Wallboard covered with vinyl wallpaper can require special drying procedures ANSWER ✔✔ A

80. Secondary damage caused by high humidity is most likely affect materials that are ANSWER ✔✔ B. hygroscopic
81. The least amount of water absorption and evaporation load where wet porous materials rep less than ~5% of combined ceiling, walls, and flooring surface areas and where low evaporation materials and assemblies are minimally wet ANSWER ✔✔ A) class 1
82. A device used to measure temperature and relative humidity in air is called a ANSWER ✔✔ C) thermo-hygrometer
83. Products used to reduce, but not necessarily microorganisms from the ANSWER ✔✔ D.
84. wood rot fungi can start growing at a moisture content at or above ANSWER ✔✔ d. 20%
85. As moisture evaporates from a wet material, the surface of the material becomes ANSWER ✔✔ A) cooler

86. The most effective type of dehumidifier to use when drying a dirt crawl space when outside air temp is 50 F (10 C) is a ANSWER ✔✔ D. desiccant
87. On-going damage that occurs due to absorption of humidity into materials is referred to as ANSWER ✔✔ B) secondary damage
88. A drying job should not be considered complete until ANSWER ✔✔ D) moisture meter readings match the drying goals
89. The amount of moisture contained in an air sample as a percentage of the maximum amount the sample could contain at a significant temperature is ANSWER ✔✔ C) relative humidity
90. A low-grain refrigerant (LGR) dehumidifier ANSWER ✔✔ D) reduces vapor pressure below that of a conventional refrigerant
91. When the outside humidity ratio (gpp or g/kg) is significantly lower than indoors, restorers can consider ANSWER ✔✔ B) closing up the structure
92. In a category 3 water intrusion with elevated risk situation (infants, elderly, etc within a building) restorers or MIPs should

ANSWER ✔✔ A) retain an IEP to assess levels of contamination

93. The PPE for restorers handling emergency services on sewage back flows shall include ANSWER ✔✔ A) protective face mask, water-proof gloves, and rubber boots
94. When using LGR dehumidifier in a class 3 water infusion containing 16000 ft3 the initial water removal recommendation consideration is A) 300 pints B) 400 pints C) 500 pints D) 750 pints -- ANSWER ✔✔ C. 500
95. When using LGR dehumidifier that removes 144 pints at AHAM Test conditions, the recommended consideration for the number installed initially on a class 2 water intrusion with 36000 ft3 is A) 3 B) 4 C) 5 D) 6 -- ANSWER ✔✔ C. 5
96. When using conventional refrigerant dehumidifier that removes 115 pints at AHAM test with water intrusion with 22000 ft3 is ANSWER ✔✔ B.

97. When using a desiccant dehumidifier that is rated to process 630 clm, the initial recommended number for consideration on a class 4 water intrusion in 4000 ft building with a 9 foot ceiling height 7 5 3 1 -- ANSWER ✔✔ C. 3
98. After physically removing excess water, the time required to dry wet materials is influenced most by the A) Equilibrium moisture content B) Rate of evaporation C) Equilibrium relative humidity D) Fiber saturation point -- ANSWER ✔✔ B. Rate of evaporation