Curioustab

Home » Chemical Engineering » Environmental Engineering

Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air.

hydrocarbons
hydrogen flouride
hydrogen sulphides
nitrogen dioxide

Correct Answer: hydrogen flouride

← Previous Question Next Question→

More Questions from Environmental Engineering

Threshold Limit Value (TLV) is the maximum allowable concentration (i.e. safe limit) of pollutants in air. Safe limit for SO2 in air is __________ ppm.
Maximum allowable concentration of CO2 in air for safe working is __________ ppm (parts per million).
Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes
Operating principle of cyclone separator is based on the action of __________ dust particles.
Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal
The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the
Scale formation in boiler is controlled by
Most of the atmospheric air pollutants are present in large quantity in
Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by
H2S present in gaseous stream can be removed by adsorption on

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion