ENVIRONMENTAL ENGINEERING IN CE QUIZ

Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for

Conversion of CO into CO₂ in the second compartment

All of these

Oxidation of unburnt hydrocarbon fuel in the second compartment

Conversion of NOx into N₂ and NH₃ in the first compartment

TRUE ANSWER : ?
YOUR ANSWER : ?

Salt content in sea water is about __________ percent.

10

3.5

1

0.5

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 : ?

The earth's atmosphere is an envelope of gases present upto a height of about __________ kms.

1000

10

200

2000

TRUE ANSWER : ?
YOUR ANSWER : ?

Inhalation of silica dust causes a disease called

Pneumoconiosis

Bronchitis

None of these

Silicosis

TRUE ANSWER : ?
YOUR ANSWER : ?

Maximum permissible turbidity in potable water is __________ ppm.

1000

1

250

10

TRUE ANSWER : ?
YOUR ANSWER : ?

Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan

With greater number of blades

Both A & B

Neither A nor B

Of increased diameter

TRUE ANSWER : ?
YOUR ANSWER : ?

Out of the following, TLV of __________ is maximum (about 500 ppm).

Toluene

Acetaldehyde

Carbon dioxide

Carbon disulphide

TRUE ANSWER : ?
YOUR ANSWER : ?

The common pollutant generated in chlor-alkali industry and battery manufacture is

Brine

None of these

Mercury

Phosphate

TRUE ANSWER : ?
YOUR ANSWER : ?

High noise level in a chemical plant can be controlled by the

Protection of operating personnel

Path control of noise

Suppression of noise at the source itself

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?