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

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 makes the structure lighter and more flexible.

The steel prevents the concrete from ever cracking.

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

The concrete protects the steel from conducting electricity

None

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

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

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 vibrate at high frequencies to transmit data acoustically.

None

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

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

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

None

Which of the following pairs correctly matches a natural polymer with its corresponding monomer?

Carbohydrate (Starch) and Isoprene

Protein and Amino acid

Protein and Glucose

Natural rubber and Amino acid

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 chemically neutralize all contaminants in the water.

They add beneficial carbon minerals to the water.

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

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

It is highly radioactive and requires specialized containment.

It biodegrades too quickly, releasing nutrients that upset ecosystems.

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 natural polymer

A copolymer

None

Which of these is an example of a synthetic polymer?

Cellulose

Natural rubber

Polyvinyl chloride (PVC)

Protein

None

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

It develops extremely high electrical resistance.

It exhibits zero electrical resistance

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

It becomes a perfect insulator.

None

10.

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

The microscopic scale (1-100 micrometers)

The atomic scale (less than 1 nanometer)

The nanoscale (1-100 nanometers)

The macroscopic scale (greater than 1 millimeter)

None

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