Which material is known for its high electrical conductivity and is commonly used in electrical wiring?
a) Aluminum
b) Copper
c) Silver
d) Steel
View Answer
Answer: b) Copper
Explanation: Copper is a highly conductive metal and is widely used in electrical wiring.
Which type of glass is used in safety applications, designed to break into small, granular pieces rather than sharp shards when shattered?
a) Tempered glass
b) Laminated glass
c) Float glass
d) Wire glass
View Answer
Answer: a) Tempered glass
Explanation: Tempered glass is designed to break into small granular pieces when shattered, reducing the risk of injury.
What is the primary material used for casting sculptures, decorative elements, and architectural components?
a) Concrete
b) Steel
c) Bronze
d) Marble
View Answer
Answer: c) Bronze
Explanation: Bronze is a commonly used material for casting sculptures, decorative elements, and architectural components due to its durability and aesthetic qualities.
What is the main ingredient in gypsum board (drywall), a widely used interior wall material?
a) Lime
b) Clay
c) Gypsum
d) Cement
View Answer
Answer: c) Gypsum
Explanation: Gypsum is the main ingredient in gypsum board (drywall), which is used as an interior wall material.
Which type of wood is known for its durability, resistance to decay, and is commonly used in outdoor applications like decking and fences?
a) Pine
b) Cedar
c) Oak
d) Mahogany
View Answer
Answer: b) Cedar
Explanation: Cedar wood is highly durable and resistant to decay, making it suitable for outdoor applications.
What is the purpose of a footing in building construction?
a) To provide structural support to the building’s walls
b) To serve as a decorative element on the building’s facade
c) To hold up the building’s roof
d) To protect the building from water infiltration
View Answer
Answer: a) To provide structural support to the building’s walls
Explanation: Footings are used to distribute the building’s weight and provide a stable foundation for the walls.
Which type of roofing material is known for its energy-efficient properties and is designed to reflect sunlight and reduce heat absorption?
a) Asphalt shingles
b) Metal roofing
c) Concrete tiles
d) Cool roof coating
View Answer
Answer: d) Cool roof coating
Explanation: Cool roof coatings are designed to reflect sunlight and reduce heat absorption, making them energy-efficient.
What is the purpose of formwork in concrete construction?
a) To provide insulation to the concrete
b) To shape and support the concrete until it gains strength
c) To add decorative elements to the concrete surface
d) To prevent cracks in the concrete
View Answer
Answer: b) To shape and support the concrete until it gains strength
Explanation: Formwork is used to shape and support the concrete until it gains sufficient strength to stand on its own.
Which type of foundation is most suitable for soils with low bearing capacity and a high water table?
a) Pile foundation
b) Raft foundation
c) Strip foundation
d) Spread footing foundation
View Answer
Answer: a) Pile foundation
Explanation: Pile foundations are used in soils with low bearing capacity and high water tables, as they can transfer loads to deeper, more stable soil layers.
What is the purpose of a lintel in a building’s structure?
a) To provide lateral stability
b) To support the roof
c) To span the opening above doors and windows
d) To hold up the foundation
View Answer
Answer: c) To span the opening above doors and windows
Explanation: Lintels are horizontal beams placed above openings like doors and windows to support the load from the structure above.
