ENVIRONMENTAL ENGINEERING IN CE QUIZ

Which of the following pollutants is absent in the emissions from a fertiliser plant ?

CO

SO₂ & SO₃

NO₂

NH₃

TRUE ANSWER : ?
YOUR ANSWER : ?

Noise level in a quiet private business office is about __________ decibels.

85

70

25

50

TRUE ANSWER : ?
YOUR ANSWER : ?

Lagoons used for purification of polluted water

Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended solid < 1 mg/litre and BOD = 3.8 mg/litre

Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds

All of these

Use micro-organisms/bacteria in presence of dissolved oxygen

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Bi-carbonates

Carbonates

Chlorides

Sulphides

TRUE ANSWER : ?
YOUR ANSWER : ?

White smoke coming out of the chimney of a furnace indicates the use of

Liquid fuel in the furnace

Low excess air

Gaseous fuel in the furnace

Very high excess air

TRUE ANSWER : ?
YOUR ANSWER : ?

Moist atmospheric air at high temperature (e.g., in summer) having high concentration of sulphur dioxide causes

All of these

Reduced strength of textiles

Corrosion, tarnishing & soiling of metals

Fading of dyes on textiles

TRUE ANSWER : ?
YOUR ANSWER : ?

The upper layer of atmosphere is called the

None of these

Ionosphere

Stratosphere

Troposphere

TRUE ANSWER : ?
YOUR ANSWER : ?

Reingleman chart No. 2 corresponds to __________ percent black smoke.

80

40

20

10

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Thermosphere

Stratosphere

Mesosphere

Trophosphere

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ plant emits large amount of SO₂ as an air pollutant.

Iron & steel

Chloralkali

Nitric acid

Sulphuric acid

TRUE ANSWER : ?
YOUR ANSWER : ?