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 vibrate at high frequencies to transmit data acoustically.

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

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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 biodegrades too quickly, releasing nutrients that upset ecosystems.

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.

None

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

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

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

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

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

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 atomic scale (less than 1 nanometer)

The microscopic scale (1-100 micrometers)

The nanoscale (1-100 nanometers)

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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 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.

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

None

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 chemically neutralize all contaminants in the water.

They add beneficial carbon minerals to the water.

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

None

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

It is lightweight, strong, and transparent.

It is opaque and absorbs all light.

It is a good electrical conductor.

It is soft and highly elastic

None

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

Styrene and butadiene monomers

Polyester resin and glass fibers

Yttrium barium copper oxide

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

None

Which of these is an example of a synthetic polymer?

Polyvinyl chloride (PVC)

Cellulose

Natural rubber

Protein

None

10.

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

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

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

They are more transparent but less conductive.

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

None

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