NEET BIOLOGY

Detailed explanation-1: -Chemical Hazards. Chemical hazards are toxic substances, which cause damage to living organisms. Air pollutants (such as secondhand smoke or carbon monoxide), heavy metals, and pesticides are a few examples. We can be exposed to these contaminants from a variety of residential, commercial, and industrial sources.

Detailed explanation-2: -Hazardous chemicals in air, water, food, consumer products, and occupational environment can potentially cause a range of diseases including cancer, fetal malformations, diseases of the respiratory, endocrine, cardiovascular and urinary systems, and neurodevelopmental and immune disorders (WHO 2017a).

Detailed explanation-3: -They can be gases, like hydrogen chloride, benzene or toluene, dioxin, or compounds like asbestos, or elements such as cadmium, mercury, and chromium. The U.S. Environmental Protection Agency has classified 187 pollutants as hazardous.

Detailed explanation-4: -Chemical hazards and toxic substances pose a wide range of health hazards (such as irritation, sensitization, and carcinogenicity) and physical hazards (such as flammability, corrosion, and explosibility).