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What is the chemical formula of common salt?
1. KCI
2. H2O
3. Xe
4. NaCl

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Correct Answer - Option 4 : NaCl

The correct answer is NaCl.

  • Common salt, used in our kitchen, is chemically sodium chloride and the formula for sodium chloride is NaCl. 
  • It is present in vast quantities in seawater, where it is the main mineral constituent. That's why seawater is the main source of common salt.

KCl
  • The formula for potassium chloride
  • Used in the salt bridge
H2O
  • Formula for water
  • Up to 60% of the human adult body is water. 
Xe
  • The formula for noble gas, Xenon
  • Used in special lighting devices

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