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

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

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

It biodegrades too quickly, releasing nutrients that upset ecosystems.

None

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

They vibrate at high frequencies to transmit data acoustically.

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.

None

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

It exhibits zero electrical resistance

It develops extremely high electrical resistance.

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

It becomes a perfect insulator.

None

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

The macroscopic scale (greater than 1 millimeter)

The microscopic scale (1-100 micrometers)

The nanoscale (1-100 nanometers)

The atomic scale (less than 1 nanometer)

None

What is the fundamental difference between a polymer and a copolymer?

A polymer is a long-chain molecule, whereas a copolymer is a short-chain molecule.

A polymer consists of a single repeating monomer unit, while a copolymer is formed from more than one type of monomer.

A polymer is made of natural monomers, while a copolymer is made of synthetic monomers.

A polymer is formed through addition polymerization, while a copolymer is formed through condensation polymerization.

None

Which of these is an example of a synthetic polymer?

Natural rubber

Cellulose

Protein

Polyvinyl chloride (PVC)

None

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

A superconductor

A ceramic composite

A copolymer

A natural polymer

None

Nylon, commonly used for ropes, carpets, and clothing, is a synthetic copolymer. What does this imply about its monomer composition?

It is a modified version of the natural polymer, protein.

It is made from a single, complex monomer called ‘nylonene’

It is made from repeating units of the natural monomer isoprene.

It is formed from two different types of monomers, hexanedioic acid and hexamethylene diamine.

None

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

Carbon atoms and polymer chains

Silver chloride and regular glass

Glass fibers and polyester resin (a type of plastic)

Steel rods and concrete

None

10.

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 makes the structure lighter and more flexible.

The steel prevents the concrete from ever cracking.

The concrete protects the steel from conducting electricity

None

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