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

The nanoscale (1-100 nanometers)

The atomic scale (less than 1 nanometer)

The microscopic scale (1-100 micrometers)

The macroscopic scale (greater than 1 millimeter)

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 biodegrades too quickly, releasing nutrients that upset ecosystems.

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

It is highly radioactive and requires specialized containment.

None

Which of these is an example of a synthetic polymer?

Cellulose

Polyvinyl chloride (PVC)

Natural rubber

Protein

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 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.

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

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 copolymer

A ceramic composite

A natural polymer

None

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

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

It exhibits zero electrical resistance

It develops extremely high electrical resistance.

It becomes a perfect insulator.

None

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

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

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’

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 concrete protects the steel from conducting electricity

The steel makes the structure lighter and more flexible.

The steel prevents the concrete from ever cracking.

None

10.

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

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