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Environmental Engineering in CE

Environmental Engineering in CE
Polyvinyl chloride containers are not suitable for storing

Metallic powder
Foodstuffs
None of these
Woolen clothes

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Environmental Engineering in CE
H₂S present in gaseous stream can be removed by adsorption on

Silica gel
Limestone powder
Active carbon
Bog iron

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Environmental Engineering in CE
Dose of chlorine for disinfection of water is about __________ mg/litre of water.

1
0.3
0.1
0.01

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Environmental Engineering in CE
During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank.

Both B and C
Digestion
Sedimentation
Filtration

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Environmental Engineering in CE
There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth's surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about __________ °C/km.

6.5
1
0.05
15

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

Centrifugal force on
Gravitational force on
Diffusion of
Electrostatic force on

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