# Mold Web Course/Chapter 2/Knowledge Test

​Knowledge Test Lesson 1 Introduction to Mold Growth Question 1: The way to control mold growth is to control moisture. A.True B.False
Lesson 2 Moisture Problems Question 2: Inadequate building ventilation can lead to mold growth. A.True B.False
Lesson 3 Humidity Question 3: Using a stove can increase the humidity in a room.
A.True B.False
Lesson 3 Humidity Question 4: Condensation can be a sign of high humidity. A.True B.False
Lesson 4 Ventilation Humidity Problems ‐ Heating, Ventilation, and Air Conditioning (HVAC) System Question 5: If duct work insulation becomes contaminated with mold, the insulation must be removed and replaced. A.True B.False
Lesson 4 Ventilation Humidity Problems ‐ Heating, Ventilation, and Air Conditioning (HVAC) System Question 6: Drain pans should be sealed so that water does not get out. A.True B.False ​Lesson 5 Structural Integrity and Mold Growth Question 7: Mold can cause cosmetic damage to building furnishings. A.True B.False
​Answer Key Question 1: Answer: “A” TRUE Eliminating all mold and mold spores indoors is virtually impossible, but controlling indoor moisture will control the growth of indoor mold. www.epa.gov/mold/moldcourse/chapter2.html#2.1
Question 2: Answer: “A” TRUE Some moisture problems have been linked to changes in building construction practices since the 1970s. These practices led to buildings that are tightly sealed but, in some cases, lack adequate ventilation. Without adequate ventilation, moisture may build up indoors and mold may grow. www.epa.gov/mold/moldcourse/chapter2.html#2.2
Question 3: Answer: “A” TRUE Humidity levels can rise in a building as a result of the use of humidifiers, steam radiators, moisture‐generating appliances such as dryers, and combustion appliances such as stoves. Cooking and showering also can add to indoor humidity. www.epa.gov/mold/moldcourse/chapter2.html#2.3
Question 4: Answer: “A” TRUE Condensation can be a sign of high humidity. When warm, humid air contacts a cold surface, condensation may form. www.epa.gov/mold/moldcourse/chapter2.html#2.3
Question 5: Answer: “A” TRUE If the HVAC system has insulation on the inside of the air ducts, and the insulation gets wet or moldy, it should be removed and replaced because the material cannot be cleaned effectively. Please note that there are no antimicrobial products or biocides approved by EPA for use on lined ductwork. www.epa.gov/mold/moldcourse/chapter2.html#2.4
Question 6: Answer: “B” FALSE Removing standing water under the cooling coils of air handlers by making sure the drain pans slope toward the drain and the drain is flowing freely. www.epa.gov/mold/moldcourse/chapter2.html#2.4
Question 7: Answer: “A” TRUE Molds gradually destroy whatever they grow on, so preventing mold growth also prevents damage to building materials and furnishings. www.epa.gov/mold/moldcourse/chapter2.html#2.5
Question 8: Answer: “B” FALSE When mold is suspected of causing damage to the structural integrity of a building, a structural engineer or other professional with relevant expertise should be consulted. www.epa.gov/mold/moldcourse/chapter2.html#2.5 ​Question 9: Answer: “B” FALSE Crawl spaces where relative humidity (RH) is high are common sites of hidden mold growth, particularly if the crawl space has a bare earth floor. The moisture that accumulates in a crawl space may also enter another part of the building and contribute to mold growth there. Moisture can pass from a crawl space into a building through cracks in walls, floors, and ceilings. www.epa.gov/mold/moldcourse/chapter2.html#2.6