TG EAMCET 2 May 2025 Shift 2 Paper

The correct statements about the compounds of boron are I. In borax bead test, the colour of cobalt metaborate is blue.
II. Diborane is prepared by the oxidation of sodium borohydride with iodine.
III. In diborane oxidation state of hydrogen is +1 .
IV. Boric acid is a tribasic acid.