During phosphorylation in glycolysis,which $3C$ sugars are transformed into each other?

Which of the following statements ($i$ to $v$) regarding glycolysis are correct?
$(i)$ It is ten enzymatic reactions that convert a six-carbon molecule to a three-carbon pyruvate and result in a net gain of $2\, ATP$ molecules.
$(ii)$ Glucose undergoes partial oxidation to form one molecule of pyruvic acid.
$(iii)$ Glucose is phosphorylated to give rise to glucose-$6$-phosphate by the activity of the enzyme phosphofructokinase.
$(iv)$ The scheme of glycolysis was given by Gustav Embden,Otto Meyerhof,and $J$. Parnas and is often referred to as the $EMP$ pathway.
$(v)$ $ATP$ is utilized at two steps: first in the conversion of glucose into glucose-$6$-phosphate and second in the conversion of fructose-$6$-phosphate to fructose-$1,6$-bisphosphate.

Which of the following processes is completed by dehydration?

$A-$ In plants and animals,the first respiratory phase is $EMP$ pathway.
$R -$ The other name of $EMP$ is $TCA$ cycle.

The formation of $Acetyl-CoA$ from pyruvic acid is the result of its

During glycolysis,out of the $10$ reactions,the number of irreversible reactions are