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

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.

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

They increase the water pressure to speed up the filtration process

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

They add beneficial carbon minerals to the water.

They chemically neutralize all contaminants in the water.

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Why are carbon nanotubes considered a superior material for touch screen devices compared to the traditionally used tin oxide?

They are able to store more electrical charge, increasing battery life.

They have better mechanical properties and sensitivity at a lower cost.

They are heavier and more rigid, making the screen less likely to break

They are more transparent but less conductive.

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

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

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Photochromic glass, which darkens in sunlight, is created by adding which substances to regular glass?

Silver chloride (or silver bromide) and copper(II) chloride

Styrene and butadiene monomers

Polyester resin and glass fibers

Yttrium barium copper oxide

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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 copolymer

A superconductor

A ceramic composite

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

It exhibits zero electrical resistance

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

It develops extremely high electrical resistance.

It becomes a perfect insulator.

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Which of these is an example of a synthetic polymer?

Polyvinyl chloride (PVC)

Natural rubber

Protein

Cellulose

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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 concrete protects the steel from conducting electricity

The steel makes the structure lighter and more flexible.

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.

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10.

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

It biodegrades too quickly, releasing nutrients that upset ecosystems.

It is highly radioactive and requires specialized containment.

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

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