Chemical Environmental Engineering

Carbonaceous particles having size less than 1 μm are called___________________?

Byadmin March 11, 2019August 29, 2021

Carbonaceous particles having size less than 1 μm are called___________________?

A. Grit
B. Aggregates
C. Aerosols
D. Smoke

Chemical Environmental Engineering

Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in___________________?

Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in___________________?

A. Food industry
B. Municipal sewage treatment
C. Petroleum refinery
D. Iron & steel plant

Read More Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in___________________?
Chemical Environmental Engineering

High noise levels produced during operation of fans and compressors can be reduced by using__________________?

High noise levels produced during operation of fans and compressors can be reduced by using__________________?

A. Mufflers (silencers)
B. Acoustic absorbent
C. Lagging of noisy duct
D. None of these

Read More High noise levels produced during operation of fans and compressors can be reduced by using__________________?
Chemical Environmental Engineering

Removal of ______________ results from the disinfection of water?

Removal of ______________ results from the disinfection of water?

A. Turbidity
B. Odour
C. Hardness
D. Bacteria

Read More Removal of ______________ results from the disinfection of water?
Chemical Environmental Engineering

During sewage treatment, the sewage is subjected to ______________ treatment in Imhoff tank?

During sewage treatment, the sewage is subjected to ______________ treatment in Imhoff tank?

A. Filtration
B. Digestion
C. Sedimentation
D. Both B. and C.

Read More During sewage treatment, the sewage is subjected to ______________ treatment in Imhoff tank?
Chemical Environmental Engineering

Fresh domestic sewage is _______________ in color?

Fresh domestic sewage is _______________ in color?

A. Grey
B. Dark brown
C. Red
D. Black

Read More Fresh domestic sewage is _______________ in color?
Chemical Environmental Engineering

The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is_________________?

The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is_________________?

A. Pipe vibrations
B. Cavitation
C. Boundary layer separation
D. Fluctuation in liquid flow

Read More The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is_________________?