202 Mock test 4

Which type of wood is classified as a softwood commonly used in boatbuilding?

• Mahogany
• Douglas fir
• Teak
• Iroko

What property is NOT typically used to identify metals?

• Weight
• Grain
• Colour
• Magnetism

Which corrosion type involves the chemical reaction between a metal and water?

• Oxidation
• Electrolytic
• Galvanic
• Hydrolysis

What is the primary storage requirement for pre-impregnated materials?

• Dry condition
• Humidity control
• Refrigerated
• Clean

Which filler compound is known for its high hardness?

• Talc
• Calcium carbonate
• Colloidal silica
• Glass microfibres

What type of bond is created using epoxy resins?

• Temporary
• Semi-permanent
• Permanent
• None of these

Which protective coating is commonly used to prevent biofouling?

• Powder coating
• Vinyl wrapping
• Anti-fouling paint
• Varnish

Which factor is NOT considered when choosing materials for boatbuilding?

• Weight
• Cost
• Colour
• Durability

What property would you typically measure to identify a cloth material?

• Weight
• Viscosity
• Smell
• Colour

Which wood is known for its excellent erosion resistance in marine applications?

• Balsa
• Spruce
• Oak
• European redwood