Question

which release poisonous gases on burning​

Answer 1

Answer:

The burning of plastics releases toxic gases like dioxins, furans, mercury and polychlorinated biphenyls (better known as BCPs) into the atmosphere, and poses a threat to vegetation, and human and animal health. ... Burning plastic also releases black carbon (soot), which contributes to climate change and air pollution.

Answer 2

Explanation:

These synthetic materials are made of carbon, hydrogen and nitrogen atoms, and when they are decomposed in a fire they produce hydrogen cyanide (HCN), a very toxic gas, plus CO and other combustion products.