Microplastics and Materials Quiz

What method is used to detect plastic particles in bottled water?

• X-ray imaging

• Fluorescence microscopy

• pH testing

• Ultrasonic waves

Why is it difficult to identify plastic particles smaller than 100 microns?

• They are invisible to the human eye

• They do not exist in bottled water

• They dissolve in the liquid

• They are too heavy to float

Which of the following is NOT a polymer?

• PVC

• Nylon

• Copper

• Polyethylene

Which material is known for its high strength and use in construction?

• Fiberglass

• Brick

• Carbon fiber

• Rubber

What is the function of the microscope when studying microplastics?

• To burn plastic particles

• To enlarge small particles for better analysis

• To separate plastic from water

• To measure the pH of the liquid

Which of the following materials is classified as a composite?

• Concrete

• Glass

• Nylon

• PVC

Why is polyethylene widely used in packaging?

• It is transparent and brittle

• It is flexible, durable, and waterproof

• It is made of metal and resists corrosion

• It is expensive but extremely strong

Which of these materials is most resistant to corrosion?

• Steel

• Copper

• Stainless steel

• Rubber

What is a key disadvantage of plastics in the environment?

• They biodegrade quickly

• They are too heavy to float in water

• They contribute to long-term pollution due to their slow degradation

• They dissolve in seawater easily

What makes carbon fiber an important material in aerospace engineering?

• It is lightweight and extremely strong

• It is flexible and waterproof

• It is cheap and biodegradable

• It is a natural material found in the environment