Recent questions and answers in Particulate Pollutants

In the design of air pollution control devices, size of the particles that are removed with $50 \%$ efficiency is termed as $\_\_\_\_$.mean sizemode sizecut sizemedian si...

A particle dispersoid has $1510$ spherical particles of uniform density. An air purifier is proposed to be used to remove these particles. The diameter specific number of...

An incandescent light bulb operated for two hours per day uses $12.2 \: \text{kWh}$ of energy per month. Burning of one kg of coal generates $2 \: \text{kWh}$ of electric...

The equipment that can be used to control particulate air pollution in an industrial unit is/areElectrostatic precipitatorcyclone separatorGravity settlerIncinerator

A gravity settling chamber of height ' $H$ ' and length ' $L$ ' is designed to control particulate air pollution. In the chamber, the horizontal velocity of air flow is '...

A boiler in an industry, located where high plume rise is expected, releases flue gas with fine particulate matter. Which one of the following options is most suited and ...

Which of the following isiare the dominant mechanism(s) for the removal of spherical particles with diameter less than $10 \mu \mathrm{m}$ from a gas stream using a fabri...

$\quad \mathrm{PM}_{2.5}$ concentrations in ambient air can be measured usingBeta attenuation methodChemiluminescence methodGravimetric methodNon dispersive infrared spec...

A bag filter is used for removal of particulate matter having a range of sizes. The correct sequence of air filtration mechanisms for their removal, in order of decreasin...