ENVIRONMENTAL ENGINEERING IN CE QUIZ

Which of the following is the most lethal water pollutant?

Phenol and cynide

Alkalis

Suspended solids

Chlorine

TRUE ANSWER : ?
YOUR ANSWER : ?

Exposure to chemicals having carcinogenic properties cause

Asthma

Dermatitis (skin disorder)

Cancer

Asphyxiation (suffocation)

TRUE ANSWER : ?
YOUR ANSWER : ?

Reinglemann chart is used for the measurement of the

Smoke density from a chimey

Exhaust gas density

Combustibles present in automobile exhaust

Flue gas temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur.

1000

50

500

3000 (i.e. 0.3%)

TRUE ANSWER : ?
YOUR ANSWER : ?

Deaeration of high pressure boiler feed water is done to reduce

Its dissolved oxygen content

Its silica content

Foaming from boilers

Caustic embrittlement

TRUE ANSWER : ?
YOUR ANSWER : ?

Fresh sewage is __________ in nature.

Alkaline

Acidic

Neutral

Highly acidic

TRUE ANSWER : ?
YOUR ANSWER : ?

The maximum CO₂ is emitted into the atmosphere by

Trees

Biomass burning

Combustion

Urea

TRUE ANSWER : ?
YOUR ANSWER : ?

For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm.

10000

500

5

1000

TRUE ANSWER : ?
YOUR ANSWER : ?

TLV of aldrin in public water supply system is about __________ μg/litre.

17

1097

357

0.5

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following dust collection equipments is the least efficient (for sub-micronic particles)?

Hollow wet scrubber

Cyclone separator

Dust catcher (gravity type)

Bag filter

TRUE ANSWER : ?
YOUR ANSWER : ?

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