Kuiz Sains Tambahan Tingkatan 5 Bab 5 Set 1

SELAMAT DATANG Kuiz Sains Tambahan Tingkatan 5 Bab 5 Set 1

Kimia Bahan (English)

KUIZ INI MENGANDUNGI 10 SOALAN

Styrene-butadiene rubber is used to make vehicle tires. Based on its name and the provided text, what type of material is it?

A natural polymer

A superconductor

A ceramic composite

A copolymer

None

What property of the synthetic polymer Perspex (Polymethyl methacrylate) makes it suitable for use in aircraft windows and car lights?

It is a good electrical conductor.

It is lightweight, strong, and transparent.

It is soft and highly elastic

It is opaque and absorbs all light.

None

Which of these is an example of a synthetic polymer?

Cellulose

Polyvinyl chloride (PVC)

Protein

Natural rubber

None

The development of nanoscience and nanotechnology, which produced materials like carbon nanotubes, involves working at what scale?

The microscopic scale (1-100 micrometers)

The macroscopic scale (greater than 1 millimeter)

The nanoscale (1-100 nanometers)

The atomic scale (less than 1 nanometer)

None

How do fiber optic cables transmit information, making them advantageous over traditional copper wires?

They transmit data as signals of light, allowing for higher speed and capacity

They use magnetic pulses, which are not affected by electrical interference.

They use superconductive materials to send electrical signals with zero loss.

They vibrate at high frequencies to transmit data acoustically.

None

Carbon nanotubes are utilized in advanced water filters. What function do they perform in this application?

They act as a membrane to physically block microorganisms and heavy metals.

They increase the water pressure to speed up the filtration process

They add beneficial carbon minerals to the water.

They chemically neutralize all contaminants in the water.

None

Fiberglass is a composite material valued for being strong, lightweight, and corrosion-resistant. What are its two primary components?

Glass fibers and polyester resin (a type of plastic)

Carbon atoms and polymer chains

Silver chloride and regular glass

Steel rods and concrete

None

The text identifies a major environmental issue with the disposal of advanced materials in electronic products. What is a primary reason that electronic waste (e-waste) is so harmful?

It is highly radioactive and requires specialized containment.

It biodegrades too quickly, releasing nutrients that upset ecosystems.

It absorbs a large amount of water, leading to soil dehydration.

It is often disposed of through open burning, which releases toxic gases.

None

Reinforced concrete, used in bridges and skyscrapers, is a composite material made of concrete and steel rods. Why is this combination superior to concrete alone?

The steel provides tensile strength, allowing the structure to support larger loads and resist forces like vibration.

The steel prevents the concrete from ever cracking.

The concrete protects the steel from conducting electricity

The steel makes the structure lighter and more flexible.

None

10.

What is the defining characteristic of a superconductor when it is cooled below its critical temperature?

It becomes a perfect insulator.

It converts electrical energy into heat energy with 100% efficiency.

It develops extremely high electrical resistance.

It exhibits zero electrical resistance

None

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