Question

Which one of the following will not control particulate pollutants?
A. Incinerator
B. Arrester
C. Scrubber
D. Filter
E. Electrostatic precipitator

Answer 1

Hint: Particulate matters are very fine and small in size. These matters cannot be treated with a thermal process.

Complete step by step answer:
Incineration is often referred to as a thermal operation, involving the combustion of waste materials containing organic substances. This transforms the waste material into ash, gases, particles and heat that are then stored in the electricity generation application. Incinerators are now fitted with systems to minimise highly toxic gas emissions during the process. Gases, particles and heat are the output of the incinerator, so filtration of particulate contaminants is regulated and precipitators are built to clear out the gases as a result of incineration. These do not regulate particulate emissions at all.Incineration of waste materials converts the waste into ash, flue gas and heat. The ash is mostly formed by the inorganic constituents of the waste and may take the form of solid lumps or particulates carried by the flue gas.

So, the correct option is A. Incinerator

Note:
Particulate matter consists of small solids that remain suspended in air, or liquid droplets. They are air contaminants that differ in composition of chemicals. Very small particulates with a diameter of 10 micrometres or less are referred to as ‘PM10’. Grit, fly ash and dust can be mostly formed particles. Fumes mist and aerosols are small-sized particulates.