ENVIRONMENTAL ENGINEERING IN CE QUIZ

__________ is removed from water by lime-soda process.

Permanent hardness

Foul smell and taste

Temporary hardness

Iron and manganese

TRUE ANSWER : ?
YOUR ANSWER : ?

The resistance of water to the passage of light through it is a measure of the

Color

Dissolved gases

Hardness

Turbidity

TRUE ANSWER : ?
YOUR ANSWER : ?

Thermal pollution due to excessive heat & temperature in the working place causes

High breathing rate

Reduction in working efficiency of manpower

Fatigue

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Death may occur, when SO₂ concentration in atmospheric air exceeds __________ ppm.

200

100

400

20

TRUE ANSWER : ?
YOUR ANSWER : ?

Carbon monoxide is a pollutant, which causes

Retardation in crop growth

Asphyxiation (suffocation) leading to death

Damage to building materials like marble

Respiratory disease (e.g. asthma)

TRUE ANSWER : ?
YOUR ANSWER : ?

The biological decomposition of organic substances in wastes controlled conditions is called

Incineration

Biological oxidation

Composting

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Average human body contains about __________ percent water by weight.

20

85

40

70

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ can not control the noise pollution.

Green house gases

Tree plantation

Vibration damping

Use of silencers

TRUE ANSWER : ?
YOUR ANSWER : ?

In the context of the chemical process industries, the term BOD is normally associated with the

Characterisation of solid wastes

Organic concentration in gaseous effluents

Characterisation of liquid effluents

Characterisation of boiler feed water

TRUE ANSWER : ?
YOUR ANSWER : ?

Presence of soluble organics in polluted water causes

Explosion hazards

Undesirable plants growth

Fire hazards

Depletion of oxygen

TRUE ANSWER : ?
YOUR ANSWER : ?

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