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

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.

None

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

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.

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.

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

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 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.

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 concrete protects the steel from conducting electricity

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.

The steel makes the structure lighter and more flexible.

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

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 biodegrades too quickly, releasing nutrients that upset ecosystems.

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

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

None

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

Natural rubber and Amino acid

Protein and Glucose

Carbohydrate (Starch) and Isoprene

Protein and Amino acid

None

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

Yttrium barium copper oxide

Polyester resin and glass fibers

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

Styrene and butadiene monomers

None

10.

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

Glass fibers and polyester resin (a type of plastic)

Carbon atoms and polymer chains

Steel rods and concrete

Silver chloride and regular glass

None

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