NPTEL Plastic Waste Management Week 7 Assignment Answers 2025
1. Bioplastics are an assimilation of which of these characteristics?
a. Bio based material & Water solubility
b. Bio based material & Biodegradability
c. Water solubility & Biodegradability
d. Bio based material, Biodegradability & Water solubility
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2. A bio based product can be defined as?
a. The product is biodegradable
b. The product degrades to form a biomass
c. The raw material is at least partly derived from biomass (plants)
d. All of the above
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3. Which of the following is not a disadvantage of bioplastics?
a. Bioplastics do nothing to change consumer behaviour regarding their use of plastic products.
b. They can interfere with or damage standard plastic recycling processes.
c. They have a higher manufacturing cost.
d. They reduce the use of fossil-fuels and reliance on non-renewable resources.
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4. Which of the following plastic of biodegradable polyester family is naturally produced-
renewable?
a. AAC
b. PHB
c. PBAT
d. PBSA
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5. Which types of synthetic polymers are incorporated with light-sensitive chemical additives to
enhance its biodegradability in specific environment?
a) Oxy-degradable plastics
b) Starch based plastic
c) Water soluble polymers
d) Photo-biodegradable plastics
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6. The plastic additives which promote oxidation processes that break the plastic down into
brittle, low-molecular-weight fragments are?
a) Prodegradant concentrates
b) Ferrocene concentrates
c) Diketone concentrates
d) Carbonyl concentrates
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7. The vegetative root that is used as an ingredient of a mushroom based plastic replacement
material is?
a. Paraben
b. Lignin
c. Mycelium
d. Casein
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8. The edible membrane that is used to encircle the drinking water developed by ‘Skipping rock
labs’ is made from which raw material
a. Bagasse
b. Sea weed
c. Palm leaves
d. Corn Starch
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9. Which of the following is a water-soluble synthetic plastic that is used as an oxygen barrier
layer in multilayer film packaging?
a) Polyhydroxylalkonates (PHA)|
b) Polyvinyl Alcohol (PVOH)
c) Poly lactic acid (PLA)
d) Ethylene Vinyl Alcohol (EVOH)
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10. An antimicrobial, antibacterial and biodegradable carry bag produced by Everittt, a group of
researchers from Nottingham and Nile University, use which of the following as a raw material
a. Banana fiber
b. Pineapple
c. Shrimp shells
d. Mushrooms
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11. Biodegradable plastics are not always compostable.
a. True
b. False
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12. Biodegradable plastic generally refers to a plastic that cannot be broken down by
microorganisms in the environment within a fixed period of time.
a. True
b. False
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13. Polyvinyl Alcohol (PVOH) is a water insoluble polymer.
a. True
b. False
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14. Bagasse products have good thermal property which can sustain temperature from -25°C to
220° C.
a. True
b. False
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15. Higher biodegradability of paper over film contributes to environment-friendliness of a metallised paper
a. True
b. False
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