ENVIRONMENTAL ENGINEERING IN CE QUIZ

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

Iron & steel

Sulphuric acid

Chloralkali

Nitric acid

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YOUR ANSWER : ?

Which of the following acts as a natural source of air pollution?

Volcanic eruption

Forest fire

Deforestation

None of these

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Photochemical smog is formed from automobile exhaust

Is harmful for crops and trees also besides causing eye irritation & asthma

Appears only on sunny days

By reaction of hydrocarbon & nitric oxide in presence of sunlight

All of these

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Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by

Biological oxygen pond

Radial settling tank (thickener) using coagulant (lime & ferrous sulphate)

Filtration

Lagoons

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'Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the

Photochemical reaction in polluted atmosphere

Automobiles exhaust

Industrial chimney exhaust

Burning of domestic fuel

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On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because

Of jamming of respiratory tract

It forms carboxyhaemoglobin by combining with haemoglobin of blood, thereby making it incapable of absorbing oxygen

Of clotting of blood

It forms CO₂ by combining with oxygen present in the blood

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Low amount of excess combustion air

Large quantity of excess combustion air

Hydrocarbon fuel

Pulverised coal as fuel

TRUE ANSWER : ?
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Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyl and haemoglobin breakdown of some animals, beyond TLV (>50 ppm)

Inhances the green house effect

Causes asphyxia

Acts as a green house gas thereby raising earth's temperature

Causes increase in sea level

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Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes

Explosion hazards

Persistent foam

Depletion of dissolved oxygen

Fire hazards

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Direct reaction of unsaturated hydrocarbons with either NO or NO₂ produces an eye irritating pollutant compound known as

Poly acrylonitrile

Peroxy acetyl nitrate (PAN) or methyl nitrile

Benzopyrene

Photochemical smog

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YOUR ANSWER : ?