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Q.

The formula of kernite or razorite is

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a

Na₂B₄O₇.4H₂O

b

Na₃BO₃.4H₂O

c

Na₂B₄O₇.10H₂O

d

Na₃BO₃.10H₂O

answer is A.

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Detailed Solution

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Kernite is a hydrated sodium borate mineral with the chemical formula ${Na}_{2} B_{4} O_{7} . 4 H_{2} O$

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The formula of kernite or razorite is