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Question

For drinking purpose, water should be tested for _______________.
  1. fluoride
  2. lead
  3. sulphate
  4. nitrate

A
fluoride
B
sulphate
C
nitrate
D
lead
Solution
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For drinking purpose, water should be tested for
fluoride, lead, sulphate, nitrate and other metals. It also includes dissolved oxygen, chemical oxygen demand, biological oxygen demand, alkalinity, most probable number, total solids, hardness etc.

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