Conversion of glucose to glucose-$6$-phosphate,the first irreversible reaction of glycolysis,is catalyzed by

During glycolysis,the first five major steps constitute:

Identify the chemical compounds represented by the following formulas:
$(1)$ $CH_3CH(OH)COOH$
$(2)$ $CH_3COCOOH$

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.

Identify the incorrect reaction from the following processes.

Which of the following is called Neuberg's ester?