MCQOPTIONS
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| 1. |
When orthoboric acid \[({{H}_{3}}B{{O}_{3}})\] is heated, the residue left is [Pb. PMT 2002] |
| A. | Metaboric acid |
| B. | Boron |
| C. | Boric anhydride |
| D. | Borax |
| Answer» D. Borax | |