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Colemanite is :
A. `Na_(2)B_(4)O_(7).10H_(2)O`
B. `Na_(2)B_(6)O_(11).5H_(2)O`
C. `NaBO_(2)`
D. `H_(3)BO_(4)`

1 Answer

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Best answer
Correct Answer - B
Colemanite is ore of boron with formula `Na_(2)B_(6)O_(11).5H_(2)O`.

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