Solid Waste and Waste Water Treatment (Civil Engineering) - MCQs

These are four options provided for the answers of the question only one option is right answer. You have to click any of the option to check your answer. You can also directly see the answer from the answer link below. if you want to see explaination of the answer you can click discuss link.

In which type of lakes, does a perfect ecological equilibrium among the producers, decomposers and consumer groups of organisms exist
  • A. Senescent lakes
  • B. Mesotrophic lakes
  • C. Oligotrophic lakes
  • D. Eutrophic lakes

Which one the following units is employed for the removal of particulate matter above 50 n in size?
  • A. Gravity settling chamber
  • B. cyclone
  • C. Fabric filter
  • D. Electrostatic precipitator

Which of the following terms, correctly describes 'Biomagnification' ?
  • A. Reproduction of micro-orgaanisms
  • B. Observation of micro-organisms under a microscope
  • C. Ability of micro-organisms to from zoogleal film
  • D. Concentration of toxic materials in the food chain

Which one the following types of settling phenomenon can be analysed by the classic sedimentation laws of Newton and stokes ?
  • A. Discrete settling
  • B. Flocculent settling
  • C. Hindered settling
  • D. Compression settling

Which of the following statements explains the term pyrolysis ?
  • A. solid waste is heated in closed containers in oxygen -free atmosphere
  • B. solid waste in incinerated in presence of oxygen
  • C. Dissolved solids from water are removed by glass distillation
  • D. Waste water is treated with oxygen

The least expensive and most suitable excreta disposal unit for rural area would be the :
  • A. souk pit
  • B. pit privy
  • C. leaching cesspool
  • D. septic tank