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Q.

Which of the following is known as pearl ash?

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a

${KMnO}_{4}$

b

$K_{2} O_{3}$

c

$KOH$

d

$K_{2} {CO}_{3}$

answer is B.

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Detailed Solution

Pearl ash is potassium carbonate.
its formula is K₂CO₃.
It is also known as potash.

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