Kuiz Sains Tambahan Tingkatan 5 Bab 3 Set 1

SELAMAT DATANG Kuiz Sains Tambahan Tingkatan 5 Bab 3 Set 1

Sebatian Karbon Dalam Kehidupan (English)

KUIZ INI MENGANDUNGI 10 SOALAN

What is the primary environmental advantage of biodiesel produced from used palm oil when compared to conventional fossil diesel?

It releases a lower carbon footprint.

It prevents acid rain entirely.

It is completely free of harmful emissions.

It produces more energy per liter.

None

Under what conditions does the process of oxidation primarily occur in palm oil, leading to its degradation?

Storing the oil in a cool, dark place.

Heating the oil to a very high temperature and reusing it for frying multiple times.

Adding antioxidants to the oil before use.

Mixing the oil with water at room temperature.

None

Which characteristic is typically found in higher concentrations in used palm oil compared to fresh, refined palm oil?

Free fatty acid content

Resistance to oxidation

Ratio of saturated to unsaturated fats

Pro-vitamin A content

None

Which of the following product categories is listed as a use for glycerol, the byproduct of biodiesel production?

Automotive lubricants for engines.

Electronic components, like circuits and wires.

Pharmaceuticals, such as baby creams and sunscreens.

Construction materials, like cement and bricks.

None

Besides cosmetics and pharmaceuticals, the text mentions that glycerol is processed into polyglycerol for use as what?

A primary ingredient for making plastic.

A natural pesticide

A biofuel additive to increase octane

An emulsifier in food and cosmetic products.

None

Which organization in Malaysia is mentioned as regulating the nation's palm oil industry and commercializing biodiesel production technology?

Centre for Education, Training and Research in Renewable Energy and Energy Efficiency (CETREE)

Malaysian Palm Oil Board (MPOB)

Universiti Sains Malaysia (USM)

Ministry of Environment and Water (KASA)

None

During the transesterification of used palm oil to produce biodiesel, what is the primary byproduct that can be repurposed for industries like cosmetics and pharmaceuticals?

Glycerol

Methanol

Water

Free fatty acids

None

In the transesterification process to produce biodiesel, what is the role of substances like potassium hydroxide (KOH) or sodium hydroxide (NaOH)?

They are the alcohol source.

They act as a catalyst.

They are a byproduct of the reaction.

They are the main reactant with the oil.

None

What is a direct environmental consequence of improperly disposing of used cooking oil down the drain, as highlighted by the benefits of recycling it?

Improving the quality of drinking water.

Clogging of drainage systems.

Increasing soil fertility

Reducing air pollution.

None

10.

What is the typical yield of glycerol, as a percentage, for every ton of biodiesel produced?

5% – 7%

20% – 25%

1% – 2%

10% – 12%

None

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