1. What is the recommended moisture content range for wood flooring before installation? - A) 0-4% - B) 4-6% - C) 6-9% - D) 9-12% Answer: C) 6-9% Rationale: The ideal moisture content for wood flooring before installation should be within 6-9% to match the indoor environment and minimize expansion and contraction. 2. Which of the following is NOT a recommended practice for acclimating wood flooring? - A) Storing wood flooring in the installation area - B) Stacking wood flooring with spacers between layers - C) Leaving wood flooring in its original packaging - D) Placing wood flooring near a heat source Answer: D) Placing wood flooring near a heat source Rationale: Placing wood flooring near a heat source can cause uneven acclimation and potential warping of the wood. 3. When sanding a wood floor, which grit sequence is generally recommended? - A) 20-40-60 - B) 40-60-80 - C) 60-80-100 - D) 80-100-120 Answer: C) 60-80-100 Rationale: A grit sequence of 60-80-100 is typically used to progressively smooth the wood surface without causing damage. 4. What is the primary purpose of a vapor retarder in wood floor installations? - A) To add cushioning - B) To reduce noise - C) To control moisture - D) To enhance thermal insulation