Dihydroxyacetone, HOCH2-CO-CH2OH, is treated with excess HIO4. Which row is correct?

JEE Advanced levelSingle correct optionDifficulty 3 of 3ro088

Dihydroxyacetone, $HOCH X_{2} - CO - CH X_{2} OH$ , is treated with excess $HIO X_{4}$ . Which row is correct?

All three carbons are oxygenated and adjacent, so there are 2 cleavable C-C bonds and 2 mol of

HIO X_{4}

are consumed. The terminal

CH X_{2} OH

groups give 2

HCHO

. The central carbonyl carbon is cleaved on both sides and ends as

CO X_{2}

(via carbonic acid), unlike the

CHOH

carbon of glycerol that ends as

HCOOH