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

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

It is opaque and absorbs all light.

It is lightweight, strong, and transparent.

It is a good electrical conductor.

It is soft and highly elastic

None

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

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

They are more transparent but less conductive.

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 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.

None

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

The microscopic scale (1-100 micrometers)

The macroscopic scale (greater than 1 millimeter)

The nanoscale (1-100 nanometers)

The atomic scale (less than 1 nanometer)

None

Which of these is an example of a synthetic polymer?

Cellulose

Polyvinyl chloride (PVC)

Protein

Natural rubber

None

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

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.

They increase the water pressure to speed up the filtration process

None

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

Yttrium barium copper oxide

Polyester resin and glass fibers

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 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 concrete protects the steel from conducting electricity

The steel prevents the concrete from ever cracking.

None

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

Carbohydrate (Starch) and Isoprene

Protein and Glucose

Natural rubber and Amino acid

Protein and Amino acid

None

10.

Styrene-butadiene rubber is used to make vehicle tires. Based on its name and the provided text, what type of material is it?

A ceramic composite

A superconductor

A natural polymer

A copolymer

None

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