\( \mathrm{H}_{3} \mathrm{BO}_{3} \) on heating up to \( 373 \mathr...

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\( \mathrm{H}_{3} \mathrm{BO}_{3} \) on heating up to \( 373 \mathrm{~K} \) yields:
(a) boric anhydride
(b) orthoboric acid
(c) metaboric acid
(d) tetraboric acid
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