GBT UNIT-2

Which of the following is considered a sustainable and fast-growing natural building material?

• steel

• bamboo

• concrete

• PVC

Rammed earth construction is known for its:

• High cost

• Poor insulation

• Low durability

• Thermal mass and sustainability

Which of the following materials is made by compressing a mixture of mud and a stabilizer?

• Cement blocks

• Clay bricks

• Stabilized mud blocks

• Concrete blocks

Hollow blocks are preferred in sustainable construction due to:

• Higher density

• Higher water absorption

• Lightweight and thermal insulation properties

• Complex manufacturing process

Which of the following acts as a binding agent in lime-pozzolana cement?

• Portland cement

• Gypsum

• Pozzolanic material

• Fly ash

Ferrocement is a composite material made up of:

• Cement and asbestos

• Reinforced steel and concrete

• Cement mortar reinforced with wire mesh

• Lime and sand

Which material is often produced using agricultural or industrial waste?

• Hollow concrete blocks

• Lime mortar

• Fly ash bricks

• Timber

Alternative roofing systems aim to:

• Increase the dead load

• Decrease life span

• Provide cost-effective and thermally efficient solutions

• Reduce ventilation

Which of the following is used in paints to reduce heat gain in buildings?

• Titanium dioxide

• Lead oxide

• Zinc oxide

• Reflective or cool pigments

Use of lime in construction is environmentally friendly because it:

• Emits more CO₂ than cement

• Requires high temperature for production

• Is recyclable and absorbs CO₂ during carbonation

• Is more expensive than Portland cement