1.

Molecular formula of borex is....

Answer»

`Na_(2)B_(4)O_(7)*5H_(2)O`
`Na_(2)B_(4)O_(7)*10H_(2)O`
`Na_(2)B_(4)O_(5)*4H_(2)O`
`Na_(2)B_(4)O_(6)*10H_(2)O`

ANSWER :B


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