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Which of the following is called 'Pearl ash'?

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Which of the following is called 'Pearl ash'?
1. Na2CO3
2. NaHCo3
3. K2Co3
4. CaCo3
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Correct Answer - Option 3 : K2Co3

K2CO3 or potassium carbonate is known as pearl ash.

  • Pearl ash, in ancient times, was created by baking potash in a kiln in order to remove impurities. The remaining fine, white powder was pearl ash.
  • Potassium carbonate is an inorganic compound and a white salt which is soluble in water.
  • It is mainly used in the production of glass and soap.

Chemical Formula Chemical Name Common Name
Na2CO3 Sodium Carbonate Washing soda
NaHCO3 Sodium bicarbonate Baking soda
K2CO3 Potasium carbonate Pearl ash
CaCO3 Calsium carbonate Limestone
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