Properties of Materials A1 Test 4

Which of the following materials is known for its high fire resistance and is commonly used in construction to prevent the spread of fire?

• Wood

• Asbestos

• Plastic

• Aluminium

What is the unit of electrical conductivity in the International System of Units (SI)?

• Ohm

• Siemens per metre (S/m)

• Ampere

• Volt

Which material is a good conductor of electricity and is often used in electrical wiring?

• Rubber

• Copper

• Glass

• Wood

What is the primary purpose of using materials with high thermal resistance in construction?

• To increase the weight of the structure

• To improve the aesthetic appearance

• To reduce heat transfer and improve insulation

• To enhance electrical conductivity

Which of the following materials has the lowest thermal conductivity, making it a good insulator?

• Steel

• Glass

• Air

• Concrete

Which of the following is a measure of a material's ability to conduct heat?

• Thermal resistance

• Thermal conductivity

• Electrical resistance

• Electrical conductivity

Which material is typically used for its fire-resistant properties in the construction of fire doors?

• Timber

• Steel

• PVC

• Fibreglass

What is the typical unit of measurement for thermal resistance in the British system?

• Watts per metre Kelvin (W/mK)

• Degrees Celsius (°C)

• R-value (ft²·°F·hr/BTU)

• Joules

Which of the following materials is known for its poor electrical conductivity and is used as an insulator?

• Aluminium

• Silver

• Rubber

• Gold