What is formed when glycerol reacts with `HIO_(4)` ?

A reaction characteristic of vicinal diols is their oxidative cleavage on treatment with periodic acid (HIO_(4)) . The carbon-carbon bond of the vicinal diol uinit is broken and two carbonyl groups result. Periodic acid is reduced to iodic acid (HIO_(3)) Cyclic diols react to give dicarbonyl compounds. The reactions are faster when the hydroxyl gorups are cid than when they are trans but both stereoisomers are oxidised by periodic acid. Periodic acid cleavage of vicinal diols is often used for analytic purposes as an aid in structure determination. By identifying the carbonyl compounds produced, The constitution of the diol may be deduced. Which of the following products is/are obtained when glycerol is treated with HIO_(4) ?

(1) What product would be formed when D-Glucose is treated with HIO_(4) ? (2) D-Threose Why epimers formed are in unequal amounts?

What is formed when chloroform reacts with heavy water?

The product when glycerol reacts with PCl_(5) is :

Acrolein is formed when glycerol is heated with