Q. Which of the following indoor air pollutants and its source is/are correctly matched?
1. Volatile Organic Compounds (VOCs) – perfumes and hair sprays.
2. Polyvinyl Chloride (PVC) – window frames and indoor plumbing.
3. Formaldehyde – from carpets and insulation foam.
Select the correct answer using the codes given below:
Explanation: Volatile organic compounds originate mainly from solvents and chemicals. The main indoor sources are perfumes, hair sprays, furniture polish, glues, air fresheners, moth repellents, wood preservatives, and many other products used in the house.
Pesticides, if used carefully and the manufacturers, instructions followed carefully they do not cause too much harm to the indoor air.
Biological pollutants include pollen from plants, mite, hair from pets, fungi, parasites, and some bacteria. Most of them are allergens and can cause asthma, hay fever, and other allergic diseases.
Formaldehyde is a gas that comes mainly from carpets, particle boards, and insulation foam. It causes irritation to the eyes and nose and may cause allergies in some people.
Asbestos is mainly a concern because it is suspected to cause cancer.
Radon is a gas that is emitted naturally by the soil. Due to modern houses having poor ventilation, it is confined inside the house causing harm to the dwellers.
PVC is used in an enormous range of domestic and industrial products, from raincoats and shower curtains to window frames and indoor plumbing.
