GMJ 6035-02 Scientific principles

Which one of the following is the SI unit for length?

• Inch

• Metre

• Foot

• kilogram

The SI derived unit area is metres

• Doubled

• Tripled

• Squared

• Cubed

Which one of the following is used to show cubic metres?

• m²

• m³

• m⁴

• m⁵

The relative density of a solid is determined by comparing it to the same volume of what other substance?

• Mercury

• Water

• Lead

• Iron

Polyethylene is the main component of which one of the following materials?

• MDPE pipe

• PVC-u pipe

• PTFE tape

• ABS pipe

There are two types of plastics used in the building services industry, thermo-setting plastics and....

• Dynamic plastics

• Toughened plastics

• Thermo plastics

• Resistant plastics

Which one of the following is a thermo setting plastic?

• Polyvinyl chloride (PVC)

• Acrylic (AC)

• Fibreglass (GRP)

• Polyethylene (PE)

Which one of the following types of stress is applied to a solid material to test the tensile strength breaking point?

• Pulling

• Twisting

• Squashing

• Resonating

Which one of the following materials is highly malleable?

• Low Carbon Steel

• Cast Iron

• Copper

• Lead

Wet central heating systems installed in domestic properties should be filled with?

• Water

• Refrigerant

• Glycol

• Heating oil