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Question

Boric acid is prepared from borax by the action of

A
HCl
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B
NaOH
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C
CO2
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D
Na2CO3
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Solution

The correct option is A HCl
Boric acid is prepared by acidifying an aqueous solution of borax. The reaction is as follows:
Na2B4O7+2HCl+5H2O2NaCl+4H3BO3
Hence option a is correct.

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