πŸ“Š Environmental Engineering
Q. Exposure to small amount of _________ results in high blood pressure & heart disease in human beings.
  • (A) Hydrogen sulphide
  • (B) Mercury
  • (C) Cadmium
  • (D) Asbestos
πŸ’¬ Discuss
βœ… Correct Answer: (C) Cadmium
πŸ“Š Environmental Engineering
Q. Exposure to SO2 containing chimney gases results in the
  • (A) Reduction in strength of leather & cloth
  • (B) Acceleration of corrosion rates of metals
  • (C) Increased drying & hardening time of paints
  • (D) All (A), (B) and (C)
πŸ’¬ Discuss
βœ… Correct Answer: (D) All (A), (B) and (C)
πŸ“Š Environmental Engineering
Q. Fine grit present in sewage is removed in the _________ during sewage treatment.
  • (A) Grit chamber
  • (B) Detritus tank
  • (C) Trickling filter
  • (D) Skimming tank
πŸ’¬ Discuss
βœ… Correct Answer: (B) Detritus tank
πŸ“Š Environmental Engineering
Q. Fluorosis (a bone disease) is caused by the presence of high concentration of _________ in atmospheric air.
  • (A) Hydrocarbons
  • (B) Hydrogen fluoride
  • (C) Hydrogen sulphides
  • (D) Nitrogen dioxide
πŸ’¬ Discuss
βœ… Correct Answer: (B) Hydrogen fluoride
πŸ“Š Environmental Engineering
Q. Fluorosis is caused due to the presence of excessive amount of _________ in drinking water.
  • (A) Mercury
  • (B) Lead
  • (C) Fluoride
  • (D) Arsenic
πŸ’¬ Discuss
βœ… Correct Answer: (C) Fluoride
πŸ“Š Environmental Engineering
Q. Foaming and priming in boiler operation can be reduced by reduction in _________ in feed water.
  • (A) Turbidity
  • (B) Color (Hazen)
  • (C) Total solids
  • (D) All (A), (B) & (C)
πŸ’¬ Discuss
βœ… Correct Answer: (D) All (A), (B) & (C)
πŸ“Š Environmental Engineering
Q. For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than _________ ppm.
  • (A) 10000
  • (B) 5
  • (C) 500
  • (D) 1000
πŸ’¬ Discuss
βœ… Correct Answer: (B) 5
πŸ“Š Environmental Engineering
Q. Which system of collection of sewage is a dry system?
  • (A) conservancy system
  • (B) biological digestion
  • (C) incernation
  • (D) water carriage system
πŸ’¬ Discuss
βœ… Correct Answer: (A) conservancy system

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