Which of the following is a significant environmental concern associated with the disposal of Glass Reinforced Plastic (GRP)?

• High energy consumption during production

• Non-biodegradability

• Emission of toxic gases during use

• High water absorption

In the manufacturing process of Carbon Fibre Reinforced Plastic (CFRP), which of the following methods is most commonly used to ensure high strength and lightweight properties?

• Hand lay-up

• Autoclave curing

• Filament winding

• Pultrusion

Tungsten carbide is known for its exceptional hardness. On the Mohs scale, where does tungsten carbide typically fall?

• 5

• 7

• 9

• 10

Tungsten carbide is often used in cutting tools due to its hardness. Which of the following materials is tungsten carbide most likely to be used to cut?

• Wood

• Plastic

• Steel

• Glass

During the CFRP manufacturing process, which of the following is a critical factor in achieving optimal resin impregnation?

• Temperature control

• Fiber orientation

• Pressure application

• Curing time

What is a major environmental advantage of using Carbon Fibre Reinforced Plastic (CFRP) in automotive applications?

• Reduced fuel consumption due to weight reduction

• Easier recyclability compared to metals

• Lower production costs

• Biodegradability

In the context of CFRP manufacturing, what is the primary purpose of using a vacuum bagging technique?

• To increase the fiber content

• To remove excess resin

• To eliminate air voids

• To enhance surface finish

In the context of CFRP, what is the role of the matrix material?

• To provide electrical conductivity

• To transfer load between fibers

• To increase thermal resistance

• To enhance optical properties

Which of the following properties of tungsten carbide makes it particularly suitable for use in mining equipment?

• High electrical conductivity

• High thermal expansion

• High hardness

• High ductility

What is a common environmental issue associated with the production of Kevlar?

• High carbon emissions

• Excessive water usage

• Release of toxic by-products

• High energy consumption