Environmental Engineering in CE
Bag filter design is predominantly dependent on gas temperature, as it affects the gas density & viscosity and the selection of filtering material. The pressure drop in a bag filter is

Proportional to the pressure of the gas
Proportional to the viscosity & density of the gas
Both B and C
Inversely proportional to viscosity of gas

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Environmental Engineering in CE
Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes

Irritation in eyes
Respiratory trouble
Poor visibility due to sky darkening
All of these

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