The main type of sludge gas evolved during sewage treatment in Imhoff tank is___________________?

Related Mcqs:

Which of the following fine dust removal equipments is the most efficient ?

A. Bag filter B. Scrubber C. Electrostatic precipitator D. Cyclone separator...

Which is the most efficient dust removal equipment for removal of submicronic dust particles from blast furnace gas ?

A. Packed scrubber B. Gravity settling chamber C. Electrostatic precipitator D. Hydrocyclone...

Pick out the correct statement?

A. Noise from ball mills can be dealt with by fibre glass lined enclosures B. Noise from vibrating chutes can be reduced by lining the metallic chute with rubber C. Noise of conveyor belt system is reduced by using urethane coated cloth conveyor belts and rubber/plastic covered metallic rollers D. All A., B. & C....

Green house effect is accentuated by________________?

A. Deforestation B. Rapid industrialisation C. Increased transportation activity D. All A., B. and C....

Brown spots in fabrics will be caused by washing with water containing large amount of___________________?

A. Iron B. Zinc C. Iodine D. Bromine...