Question

what is mean by borax

Answer 1

Census records. ( general what does mean)
And in chemistry it's an important boron compound.

Answer 2

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Borax having IUPAC name of sodium tetraborate decahydrate is also known as orthoboracic acid. Its chemical formula is Na₂B₄O₇.10H₂O. The compound is have separate lattice structure so it is used as lubricant or powder on carrom boards.

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