general Knowledge
What is the largest ocean on Earth?
Pacific Ocean
What tool is commonly used to drive nails into wood?
Hammer
What unit is used to measure electrical current?
Amperes (Amps)
What type of pipe is commonly used for residential drinking-water supply lines?
PEX
What does HVAC stand for?
Heating, Ventilation, and Air Conditioning
How many sides does a hexagon have?
6
What tool is used to check whether an angle is exactly 90°?
Square/Carpenters Square
What color is typically used for the ground wire in U.S. electrical wiring?
Green or bare Copper
What tool is commonly used to tighten or loosen a pipe fitting?
Pipe Wrench
What component of an HVAC system removes heat from indoor air?
Evaporator Coil
Who painted the Mona Lisa?
Leonardo Da Vinci
What does OSB stand for?
Oriented Strand Board
What does GFCI stand for?
Ground Fault Circuit Interrupter
What is the purpose of a P-trap underneath a sink?
To hold water and prevent sewer gases from entering the building
What is the main purpose of ductwork in a forced-air HVAC system?
To distribute conditioned air throughout a building
What is the chemical symbol for gold?
Au
What is the purpose of a stud in a wall?
To provide structural support and a framework for the wall
What device protects a circuit from excessive electrical current?
Circuit Breaker
What is the main purpose of a water shutoff valve?
To stop or control the flow of water
What is the process of replacing indoor air with fresh outdoor air called?
Ventilation
What planet is known as the Red Planet?
Mars
What is the standard spacing commonly used between wall studs in residential construction?
16 inches on center
What does PVC stand for?
Polyvinyl Chloride
How many gallons are in a standard 5-gallon bucket?
5