Test: Environmental Engineering - 2 - Civil Engineering (CE) MCQ

Siderosis is a disease caused by the inhalation of __________ dust.

Which of the following pollutants is not emitted during volcanic eruptions ?

The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by

Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by

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

Which of the following dust collection equipments is the least efficient (for sub-micronic particles) ?

Dust collection efficiency of a cyclone separator depends upon its

Ionisation potential employed in the industrial electrostatic precipitator is of the order of

The widest explosive limit is of __________ , thereby making it the most explosive gas.

Aerobic biological oxidation ponds used for the purification of polluted water

Polluted water having low BOD are most economically treated in

Tri-sodium phosphate is used in boiler water treatment to reduce

The commonest form of iron & manganese found in ground water as pollutant is in the form of their

80% less than 200 mesh size particles are called

Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal

Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes

TLV of ozone (O₃) and phosgene (COCl₂) in air is __________ ppm.

Most of the atmospheric air pollutants are present in large quantity in

Pick out the wrong statement.

'Pneumoconiosis' is a disease caused by the inhalation of __________ dust.

The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the

Pick out the wrong statement.