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q-nimnlikhit-aitihaasik-ghttnaaon-ko-kaalaanukrmik-krm-men-vyvsthit-kren-dvitiiy-vishv-yuddh-kaa-shuruu



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Q1.
Alum purifies muddy water by _________
  1. Coagulation
  2. Forming a true solution
  3. Dialysis
  4. Absorption
Q2.
Alums purify muddy water by :
  1. dialysis
  2. absorption
  3. coagulation
  4. forming true solution
Q3.
A fish of muddy waters is
  1. Catla
  2. Labeo
  3. Heteropneustes
  4. Diodon
Q4.
Alum is added to muddy water to :
  1. Kill all kinds of microorganisms
  2. Impart different colours to the solution
  3. To increase the Tyndal effect
  4. Fasten the sedimentation rate
Q5.
Muddy water can be purifies through coagulation using________
  1. Common salt
  2. Lime
  3. Alums
  4. Sand

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