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Environmental Engineering in CE

Environmental Engineering in CE
Aerosols present in atmospheric air may be

Positively charged
Combination of all A, B & C
Neutral
Negatively charged

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Environmental Engineering in CE
CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones.

10¹⁵
10²
10⁵
10⁹

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Environmental Engineering in CE
Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage?

Sulphur dioxide & spray of weed killers
Smog & ozone
Carbon monoxide
Hydrogen fluoride & nitrogen oxides

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Environmental Engineering in CE
Reinglemann chart is used for the measurement of the

Smoke density from a chimey
Combustibles present in automobile exhaust
Exhaust gas density
Flue gas temperature

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Environmental Engineering in CE
The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is

Cavitation
Fluctuation in liquid flow
Pipe vibrations
Boundary layer separation

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Environmental Engineering in CE
Turbidity of water is an indication of the presence of

Dissolved solids
Suspended inorganic matter
Dissolved gases
Floating solids

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