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Properties and Purification of Water

1.Why Is Distilled Water Used Instead of Tap Water in Chemical Laboratories?

In chemical laboratories, distilled Water is used to perform chemical reactions for the following reasons:

  • It is pure, and it is free from any other elements.
  • Distilled Water is non-reactive, which is why it does not affect the results of various chemical reactions.
  • Distilled Water is also free from microorganisms like viruses, bacteria, and protozoa.

2.Name Some Contaminants Removed From the Sewage Water During the Industrial Water Treatment.

Some contaminants that are removed during the industrial water treatment process are as follows:

  • Toxic pesticides and herbicides.
  • Plastics and microplastics.
  • Hazardous drugs.
  • Toxic heavy metals like mercury and lead.
  • Sand, gravel, grit, metal particles.
  • Organic wastes like plant materials, animal faeces, animal bodies etc.
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