Alkalinity of Water and its Estimation MCQ

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• Alkalinity is a measure of the ability of water to neutralize the acids.
  ক

  True

  খ

  False
• The alkalinity due to carbonate ion is 2P when?
  ক

  P = M

  খ

  P > M/2

  গ

  P = M/2

  ঘ

  P < M/2
• The alkalinity due to bicarbonate ion when P < M/2 will be ____________
  ক

  M-2P

  খ

  2(M-P)

  গ

  Nil

  ঘ

  2P-M
• The alkalinity due to hydroxide ion when P > M/2 will be ____________
  ক

  M-2P

  খ

  2(M-P)

  গ

  Nil

  ঘ

  2P-M
• What is the disadvantage of using high alkaline water?
  ক

  It may lead to infections

  খ

  It may lead to electrolysis

  গ

  It may lead to caustic embrittlement

  ঘ

  It may lead to indigestion
• With respect to the constituents causing alkalinity in water, which of the following situation never arises?
  ক

  CO32- and HCO3– together

  খ

  HCO3– and OH– together

  গ

  OH– only

  ঘ

  OH– and CO32- together
• The temporary hardness in water is due to ____________
  ক

  OH–

  খ

  CO32-

  গ

  H+

  ঘ

  HCO3–
• Which of the following indicator is pink in basic medium?
  ক

  Methyl orange

  খ

  Phenolphthalein

  গ

  Starch

  ঘ

  Litmus paper
• Water from reservoirs comes under the category of ____________
  ক

  Surface water

  খ

  Rain water

  গ

  Underground water

  ঘ

  Sea water
• Which source of water is free from hardness and surface impurities?
  ক

  Surface water

  খ

  Underground water

  গ

  Rain water

  ঘ

  Sea water