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Environmental Engineering in CE

Environmental Engineering in CE
Presence of __________ hardness is responsible for the temporary hardness in water.

Choride
Calcium
Carbonate
Sulphate

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Environmental Engineering in CE
During which of the following operating conditions of an automobile, carbon monoxide content in the exhaust gas is maximum?

Acceleration
Cruising
Idle running
Deaccelaration

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Environmental Engineering in CE
Which of the following pollutants, if present in atmosphere is detectable by its odour?

CO
SO₂
CO₂
NO₂

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Environmental Engineering in CE
Operating principle of cyclone separator is based on the action of __________ dust particles.

Centrifugal force on
Electrostatic force on
Diffusion of
Gravitational force on

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Environmental Engineering in CE
A shallow pond in which the sewage is retained and biologically treated is called

Skimming tank
Lagoon
Imhoff tank
Oxidation

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Environmental Engineering in CE
Which of the following is the most detrimental for water used in high pressure boiler?

Silica
Dissolved oxygen
Phenol
Turbidity

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