Materials Recycling and Ecology test

Create an engaging and educational image featuring recycling symbols, biodegradable materials, and nature, with a background showing a clean environment and various types of recyclable materials such as glass, metals, and plastics.

Materials Recycling and Ecology Quiz

Test your knowledge on materials recycling and ecology with our comprehensive quiz! This quiz covers various topics, from the recycling processes of glass and plastics to the intricacies of composting and greenhouse gas emissions. Enhance your understanding of sustainable practices and environmental science.

Topics include:

Recycling methods
Bioplastics and biodegradability
Greenhouse gas emissions
Types of materials and their properties

15 Questions4 MinutesCreated by EcoAware247

Which of the following statement (-s) about chemical recycling is (are) TRUE ?

A) Chemical recycling of plastics involves breakage of covalent bonds in macromolecules

B) Chemical recycling of plastics results in decreased molecular weight of molecules

C) Chemical recycling of plastics does not result in decreased molecular weight of molecules

D) Chemical recycling of plastics involves weakening of intermolecular forces between molecules, but does not involve breakage of covalent bonds in macromolecules

E) Chemical recycling of poly(ethylene terephthalate) involves composting process

Which of the following statement (-s) about bio(polyethylene) is (are) TRUE ?

A) Bio(polyethylene) is considered a bioplastic because it is biodegradable, but not compostable

B) Bio(polyethylene) is considered a bioplastic because it is produced from renewable resources, but it is not biodegradable

C) Bio(polyethylene) is considered a bioplastic because it is produced from renewable resources and biodegradable

D) Bio(polyethylene) is considered a bioplastic because it is more biodegradable, compared to ordinary polyethylene

E) None of the above statements

Which of the following statement (-s) about metal recycling (-s) is (are) TRUE ?

A) Aluminium and copper cannot be separated by magnetic separation technique

B) Aluminium and polystyrene can be separated by magnetic separation technique

C) Tin plated steel food containers are not recyclable, because tin cannot be separated from steel

D) Aluminum can be recycled and reused with as little as 25 % of the energy that would be required to produce it from raw materials

E) Aluminum can be recycled and reused with as little as 5 % of the energy that would be required to produce it from raw materials

What does the number inside the recycling symbol mean?

A) It can indicate the grade of plastic

B) It can indicate the age of the material

C) It can indicate size of the container

D) It can indicate local recycling center

Which of the following mixtures can be separated by sink-float separation in water?

A) Mixture of high density polyethylene and polypropylene

B) Mixture of high density polyethylene and low density polyethylene

C) Mixture of high density polyethylene and poly(ethylene terephthalate)

D) Mixture of poly(vinylchloride) and poly(ethylene terephthalate)

E) Mixture of aluminium and poly(ethylene terephthalate)

Why Pyrex or borosilicate glass must not be part of the soda-lime-silicate glass recycling stream?

A) Resulting recycled material from Pyrex glass and soda-lime-silicate glass is dark and opaque

B) Pyrex glass gives rise to defects in the recycled soda-lime-silicate glass

C) Pyrex glass contains heavy metals and will contaminate soda-lime-silicate glass with lethal elements

D) Pyrex or borosilicate glass is a polymer, which is incompatible with non-polymeric materials, such as soda-lime-silicate glass

Which of the following statement (-s) about composting (-s) is (are) TRUE ?

A) Industrial composting involves only psychrophylic and mesophilic microorganisms

B) Industrial composting can be used for recycling of poly(ethylene terephthalate)

C) Industrial composting can be used for recycling of bio(polyethylene)

A) None of the above statements

Which of the following statement (-s) about thermosets is (are) TRUE ?

A) Thermosets cannot be recycled by melt extrusion because of their low purity

B) Thermosets can be recycled by melt extrusion because of their high purity

C) Thermosets cannot be recycled by melt extrusion because of their high melting point

D) Thermosets cannot be mechanically recycled by melt extrusion because of their cross-linked structure

E) Thermosets can be recycled by melt extrusion because of their cross-linked structure

Compare the biodegradability of those two polymers

A) Biodegradability rate of polymer 1 is higher than polymer 2

B) Biodegradability rate of polymer 2 is higher than polymer 1

C) Biodegradability rate of polymer 1 an polymer 2 is equal

D) Polymer 1 and polymer 2 are both non-biodegradable

What materials are used in numbered parts of microbial oxidative degradation analyzer?

A) 1- carbon dioxide 2- sodium sulphate 3 – carbon dioxide

B) 1- sodium hydroxide 2- ammonia 3 – sodium hydroxide

C) 1- sodium hydroxide 2- sodium sulphate 3 – sodium hydroxide

D) 1- sodium sulphate 2- ammonia 3 - sodium hydroxide

E) 1- sodium hydroxide 2- sulphuric acid 3 – sodium hydroxide

Which of the following statement (-s) about devulcanisation is (are) TRUE ?

A) Devulcanisation is a process, used to break covalent bonds in thermoplastics

B) Devulcanisation is a process, used to break covalent bonds in cured rubber

C) Devulcanisation is a process, that does not involve rupture of covalent bonds and is used to physically melt rubber

D) Devulcanisation is a process, that is used to depolymerise poly(ethyleneterepthtalate)

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Materials Recycling and Ecology test

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