Hardness of Water Quiz Question with Answer

31. The ion – exchange resins used for softening water are

  1. Cross linked polymers with micro porous structure
  2. Branched polymers with porous structure
  3. Cross linked polymers with non-porous structure
  4. Branched polymers with non – porous structure

32. The maximum desirable limits (as per BIS) of total hardness (as CaCO3) in drinking water is

  1. 600 ppm
  2. 300 ppm
  3. 500 ppm
  4. 1000 ppm

33. The method by which ions are pulled out of salt water by direct current, and employing thin and rigid membrane is called

  1. Electrodialysis
  2. reverse osmosis
  3. Zeolite
  4. ion exchange

34. The process of allowing water to stand undisturbed in big tanks for settling of the suspended particles due to force of gravity

  1. Coagulation
  2. conditioning
  3. sedimentation
  4. screening

35. The process of wet steam formation is called

  1. Foaming
  2. priming
  3. corrosion
  4. caustic embrittlement.

36. The purification of brackish water y reverse osmosis is also called as

  1. Super – filtration
  2. Supra – filtration
  3. Hypo – filtration
  4. filtration

37. The soft, loose and slimy precipitate formed within the boiler is called

  1. Scale
  2. sludge
  3. embrittlement
  4. coagulation

38. Ultraviolet rays are used in the treatment of water for

  1. Filtration
  2. Sedimentation
  3. Screening
  4. Sterilization.

39. Uneven deposition of turbines causes

  1. Vibrational problems
  2. Heat problems
  3. Power problems
  4. Uncontrolled cooling.

40. When temporary hard water is boiled, one of the substance formed is

  1. CaCO3
  2. CaSO4
  3. HCl
  4. CO2

Tags :

Multiple Choice Questions and Answers on Hardness of Water

Hardness of Water Multiple Choice Questions and Answers

Hardness of Water Trivia Quiz

Hardness of Water Question and Answer PDF Online

Spreading Knowledge Across the World

USA - United States of America  Canada  United Kingdom  Australia  New Zealand  South America  Brazil  Portugal  England  Scotland  Norway  Ireland  Denmark  France  Spain  Poland  Netherland  Germany  Sweden  South Africa  Ghana  Tanzania  Nigeria  Kenya  Ethiopia  Zambia  Singapore  Malaysia  India  Pakistan  Nepal  Taiwan  Philippines  Libya  Cambodia  Hong Kong  China  UAE - Saudi Arabia  Qatar  Oman  Kuwait  Bahrain  Dubai  Israil  and many more....