NEET BIOLOGY

Detailed explanation-1: -E-waste contains numerous toxic chemicals including metals such as lead, cadmium, mercury, and nickel, and organic compounds such as flame retardants, chlorofluorocarbons, polycyclic aromatic hydrocarbons (PAHs), polybrominated diphenyl ethers (PBDEs), and polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs).

Detailed explanation-2: -Electronic waste (e-waste) contributes many harmful substances to the environment. Mercury is one of these. Mercury can enter the environment through the improper disposal of fluorescent tubes, tilt switches (switches in thermostats and other mechanical devices), older computers, batteries and even paint (epa.gov).

Detailed explanation-3: -Mercury can be found in fluorescent tubes (numerous applications), tilt switches (mechanical doorbells, thermostats) [3], and flat-screen monitors. Toxic substances in e-waste can be released into the environment, ending up in bodies of water, groundwater, soil, and air.

Detailed explanation-4: -Type 1-Major appliances (refrigerators, washing machines, dryers etc.) Type 2 – Small appliances (vacuum cleaners, irons, blenders, fryers etc.) Type 3 – Computer and telecommunication appliances (laptops, PCs, telephones, mobile phones etc.)