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

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Environmental Engineering in CE
Smoke is produced due to

All of these
Insufficient supply of combustion air and insufficient time for combustion
Poor quality of fuel and improper mixing of fuel & combustion air
Poor design & overloading of furnace

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