AE & JE CE Quiz Environmental Engineering Booster Quiz-1

Increase in population of a rapidly growing city, may be estimated by:

A compound that imparts temporary hardness to water:

Water losses in water supply is assumed as:

Sludge treatment is mainly done in order to:

The bacterias which require oxygen for their survival is known as:

By boiling water, hardness can be removed if it is due to:

In the activated sludge process sludge volume index is used to decide

If initial Dissolved Oxygen (DO) and final DO after 5 days incubation at 20°C in 1.0% dilution sample are 5.0 mg/L and 4.0 mg/L respectively, what is 5-days BOD of the same sample in mg/L?

The water which is not chemically pure but does not contain anything harmful to human health is called as

Disposal of refuse by Bangalore method involves