Q.What are particulate pollutants? Explain any three.

Step 1. Definition. Particulate pollutants are small solid particles and liquid droplets suspended in air; many are hazardous. They may be viable (small living organisms such as bacteria, fungi, moulds and algae) or non-viable (not alive, and also help transport viable particles), the non-viable ones further split into four types by nature and size.

Step 2. Smoke. Solid particles, or a mixture of solid and liquid particles, formed by the combustion of organic matter -- e.g. cigarette smoke, oil smoke, and smoke from burning fossil fuel, garbage or dry leaves.

Step 3. Dust. Fine solid particles produced during the crushing and grinding of solid materials -- e.g. sand from sand-blasting, saw dust from wood works, cement dust from cement factories, fly ash from power-generating units. …

Give the general definition first, then pick any three of the four textbook types (smoke, dust, mists, fumes) and define + exemp …

• Explaining three examples without first stating the general definition of a particulate pollutant -- the question asks 'what are particulat …