Oxidation state of hydrogen in compound $X$ is $-1$ and in compound $Y$ is $+1$. $X$ and $Y$ are respectively

Which of the following statements about hydrogen is incorrect?

Which statement is not correct for ortho and para hydrogen?

Which element does not contain any neutrons?

Observe the following reactions:
$I$. $N_{2(g)} + 3H_{2(g)} \xrightarrow[773 \ K, \ 200 \ atm]{X} 2NH_{3(g)}$
$II$. $CO_{(g)} + H_{2}O_{(g)} \xrightarrow[673 \ K]{Y} CO_{2(g)} + H_{2(g)}$
$III$. $CH_{4(g)} + H_{2}O_{(g)} \xrightarrow[1270 \ K]{Z} CO_{(g)} + 3H_{2(g)}$
Catalysts $X$,$Y$,and $Z$ respectively are:

Which of the given compounds can enhance the efficiency of hydrogen storage tank?