Construction Materials and Building Technology MCQs (Part-8)
Which type of cement is used for underwater construction?
A Portland Cement
B White Cement
C Waterproof Cement
D Sulphate Resistant Cement
Sulphate Resistant Cement is designed to withstand sulphate attacks, often found in marine environments. It is ideal for use in underwater construction, such as foundations and sea walls, to prevent deterioration.
What is the main component of mortar?
A Lime
B Water
C Cement
D Sand
Mortar is a mixture of cement, sand, and water. The cement acts as the binder, holding the sand particles together to form a strong bond for masonry and brickwork.
Which material is commonly used for thermal insulation in buildings?
A Glass wool
B Brick
C Concrete
D Pumice
Glass wool is used for thermal insulation due to its ability to trap air and reduce heat transfer. It is commonly applied in walls, roofs, and floors to improve energy efficiency in buildings.
What is the main purpose of using aggregates in concrete?
A Increase volume
B Improve appearance
C Provide strength
D Reduce cost
Aggregates, such as sand, gravel, and crushed stone, provide the bulk and strength to concrete. They support the cement and contribute to the compressive strength and durability of the concrete structure.
What is the standard size of a concrete block?
A 300 mm x 200 mm x 500 mm
B 200 mm x 200 mm x 400 mm
C 300 mm x 150 mm x 450 mm
D 200 mm x 100 mm x 400 mm
The standard size of a concrete block is 200 mm x 200 mm x 400 mm. This size facilitates efficient construction and ensures uniformity, making it easier to calculate and lay blocks.
What material is used to reinforce concrete?
A Steel
B Wood
C Aluminum
D Glass
Steel bars, also known as rebar, are used to reinforce concrete. Steel provides tensile strength to concrete, which is weak in tension, preventing cracking and ensuring structural integrity under stress.
Which of the following is a non conventional construction material?
A Concrete
B Steel
C Brick
D Bamboo
Bamboo is a sustainable, non conventional material used for construction. It is strong, flexible, and renewable, making it ideal for scaffolding, flooring, and other structural applications.
Which material is primarily used for waterproofing roofs?
A Steel
B Clay
C Bitumen
D Cement
Bitumen is widely used for waterproofing roofs due to its flexibility, durability, and water resistance. It is commonly applied in layers to prevent water infiltration in roofing systems.
What is the primary function of formwork in concrete construction?
A To reinforce concrete
B To support concrete until hardened
C To add color to concrete
D To dry concrete faster
Formwork is a temporary mold used to shape and support concrete during its curing process. It ensures that the concrete maintains its intended shape and position until it hardens and gains strength.
What is the main benefit of using recycled materials in construction?
A Lower environmental impact
B Increased durability
C Increased cost
D Reduced strength
Using recycled materials in construction reduces waste, conserves natural resources, and minimizes the environmental impact. It promotes sustainability and reduces the carbon footprint of the construction process.
What is the most common type of insulation used in walls?
A Concrete
B Wood
C Fiberglass
D Aluminum
Fiberglass is the most common insulation material for walls. It is cost effective, non combustible, and has excellent thermal resistance, helping to maintain energy efficiency and temperature control in buildings.
Which of the following is a primary use of gypsum in construction?
A Waterproofing
B Reinforcement
C Insulation
D Plastering
Gypsum is commonly used for plastering walls and ceilings. It provides a smooth finish, is fire resistant, and is easy to work with, making it ideal for interior applications in buildings.
Which material is commonly used for road construction?
A Bitumen
B Concrete
C Gravel
D Steel
Bitumen is commonly used in road construction, as it binds aggregates together to form durable asphalt. Its waterproofing properties and ability to withstand traffic make it ideal for roads and highways.
What is the primary function of mortar in masonry?
A Fireproofing
B Bonding bricks and stones
C Insulation
D Waterproofing
Mortar is a mixture of cement, sand, and water used to bond bricks and stones together in masonry. It fills gaps between the materials, providing stability and strength to walls and structures.
What is the primary purpose of curing concrete?
A To remove moisture
B To make it smoother
C To allow it to harden
D To reduce weight
Curing is crucial for allowing concrete to fully hydrate and harden. It maintains moisture in the concrete, helping it achieve its maximum strength and durability while preventing cracking during the setting process.