Suspended liquid droplets generated by condensation from the gaseous to the liquid state or by breaking up a liquid into a dispersed state is known as
A.Dust
B.Fume
C.Mist
D.Vapours
E.None of the above
Category: Environmental Engineering Mcqs
Which of the following has least wave-length?
A.Cosmic rays
B.Ultraviolet rays
C.X-rays
D.Gamma rays
Short circuit means:
A.Direct flow of current between two points of different potential
B.Indirect flow of current between two points
C.Direct flow of current between points of the same potential
D.none of the above
Car speed of a lift is usually
A.0.1 to 0.3 m/s
B.0.5 to 1 m/s
C.2 to 5 m/s
D.7 to 10 m/s
Turbidity in water may be removed by
A.Sedimentation
B.Filtration
C.Agitation
D.Aeration
E.Oxidation
Which of the following particles will be smallest in size?
A.Smog
B.Rain
C.Drizzle
D.Mist
E.Fog
Which of the following area of work needs lowest noise level?
A.Gymnasiums
B.Lecture halls
C.Library
D.Kitchens
The speed of sound through human body is around
A.344 m/s
B.688 m/s
C.1560 m/s
D.3120 m/s
The percentage of krypton in atmospheric air is around
A.0.01 ppm
B.0.1 ppm
C.1 ppm
D.10 ppm
Which emission has generally least proportion from a diesel engine as compared to a petrol engine?
A.Oxides of nitrogen
B.Hydrocarbons
C.Carbon monoxide
D.All of the above
