ENVIRONMENTAL ENGINEERING IN CE QUIZ

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

Very high excess air

Low excess air

Liquid fuel in the furnace

Gaseous fuel in the furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following sources is responsible for maximum air pollution?

Industrial chimney exhaust

Forest fire

Photochemical oxidation of organic matter

Automobiles exhaust

TRUE ANSWER : ?
YOUR ANSWER : ?

Higher concentration of CO₂ in atmosphere

Reflects and absorbs the longer wavelength (infra-red) radiations

Allows visible solar radiation (ultraviolet) of short wave-length to pass through

All of these

Prevents solar heat being radiated out completely, resulting in

TRUE ANSWER : ?
YOUR ANSWER : ?

Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace.

Large quantity of excess combustion air

Pulverised coal as fuel

Hydrocarbon fuel

Low amount of excess combustion air

TRUE ANSWER : ?
YOUR ANSWER : ?

Dissolved oxygen content in river water is around __________ ppm.

500

250

100

5

TRUE ANSWER : ?
YOUR ANSWER : ?

Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate?

CFC (chloro fluoro carbons)

NOx

SO₂

CO

TRUE ANSWER : ?
YOUR ANSWER : ?

Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by

Floatation & skimming

Centrifugation

Chemical coagulation

Ultrafiltration

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the most widely used disinfectant in water treatment?

Irradiation of water by ultraviolet light

Cation exchanger

Chlorine

Coagulation

TRUE ANSWER : ?
YOUR ANSWER : ?

Dust collection efficiency of a cyclone separator depends upon its

Diameter

All of these

Inlet gas velocity

Overall height

TRUE ANSWER : ?
YOUR ANSWER : ?

Biological oxidation ponds remove organic matters present in the polluted water by

Aerobic oxidation

Neither A nor B

Both A & B

Using the activities of bacteria and other micro organisms

TRUE ANSWER : ?
YOUR ANSWER : ?