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Answer:
Fireplaces haven’t changed much in hundreds of years. They rarely serve any kind of functional purpose anymore, but they harken back to a time when all domestic heat came from either wood or coal that you burned yourself. To safely burn today’s highly combustible plastic, those fireplaces would need to include technology that would control temperature and emissions, and properly dispose of the residual toxic material. Municipal waste incinerators, which have that technology, are able to burn used plastics and produce energy just like the domestic hearths of old.
“There’s a good reason burning household trash, including plastic, is prohibited in most of the U.S. — the toxic species,” says Noelle Eckley Selin, an assistant professor in MIT’s Engineering Systems Division, as well as the Department of Earth, Atmospheric, and Planetary Sciences. When plastic is burned, it releases dangerous chemicals such as hydrochloric acid, sulfur dioxide, dioxins, furans and heavy metals, as well as particulates. These emissions are known to cause respiratory ailments and stress human immune systems, and they’re potentially carcinogenic.
Explanation:
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Answer:
16 i) When plastic is burned, it releases dangerous chemicals such as hydrochloric acid, sulfur dioxide, dioxins, furans and heavy metals, as well as particulates. It also increases global warming when burned, thus plastic shouldn't be burned.
ii) Bakelite and melamine plastics are thermosetting plastics.
iii)Plastic containers are favoured for storing food due to the following reasons :
- Plastic containers are lightweight.
- They do not react with the food items and so safer to store unlike aluminium which reacts with lemon pickles.
- It has good strength,durability and quality.(Write any 2 points)